i-manager Publications

i-manager's Journal on Material Science (JMS)

Current Issue Vol. 11 Issue 3

Exploring the Optical and Structural Properties of Chromium (Cr)-Doped Polyaniline
Green Route Extraction of TPA Monomer from Poly Cotton Fibre: A Sustainable Recovery Approach
Efficient Extraction of Diesel Oil from Waste Plastics: A Comprehensive Study
Laser-Based Ultrasonics for Non-Destructive Material Testing: A Practical Guide
Advancements and Applications of Piezoelectric Energy Harvesters: A Comprehensive Review

Most Cited

Volume 7 Issue 3 October - December 2019

Research Paper

Preparation of Sr₂SiO₄:Dy³⁺ Phosphors by Solid-State Reaction Method and their Thermoluminescence Properties

Durga Verma* , R. P. Patel**

* Department of Applied Physics, Faculty of Engineering and Technology, Shri Shankaracharya Group of Institutions, Chattisgarh, India.

** Department of Physics, Kalinga University, Atal Nagar, Raipur, Chattisgarh, India.

Verma, D., and Patel, R. P. (2019). Preparation of Sr₂SiO₄:Dy³⁺ Phosphors by Solid-State Reaction Method and their Thermoluminescence Properties. i-manager’s Journal on Material Science, 7(3), 1-7. https://doi.org/10.26634/jms.7.3.15398

Abstract

Sr₂SiO₄:Dy³⁺phosphors were prepared by a conventional solid-state reaction method. In this present study, thermoluminescence (TL) study of Dy³⁺ doped Sr₂SiO₄ phosphor is reported. The crystal structure of the prepared phosphor has an orthorhombic structurewith space groupPnma and average crystalline sizes could be calculated as 34 nm. The Fourier-Transform Infrared spectroscopy (FTIR) confirms the present elements in Sr₂SiO₄:Dy³⁺phosphor and energy band gap were founded by optical absorption spectra.Thermoluminescence study was carried out for the phosphor which shows a single glow curve.The kinetic parameter has been calculated by using Chen’s glow curve method.

References

[1]. Buchholz, D. B., Liu, J., Marks, T. J., Zhang, M., & Chang, R. P. (2009). Control and characterization of the structural, electrical, and optical properties of amorphous zinc− indium− tin oxide thin films. ACS applied materials & interfaces, 1(10), 2147-2153. https://doi.org/10.1021/ am900321f

[2]. Bos, A. J. J. (2006). Theory of thermoluminescence. Radiation Measurements, 41, S45-S56. https://doi.org/10. 1016/j.radmeas.2007.01.003

[3]. Catti, M., Gazzoni, G., & Ivaldi, G. (1983). Structures of twinned β- Sr SiO 2 4and of α′-Sr1.9Ba0.1SiO4. Acta Crystallographic Section C, 39(1), 29-34. https://doi.org/ 10.1107/S0108270183003492

[4]. Chen, R. (1969a). Glow curves with general order kinetics. Journal of the Electrochemical Society, 116(9), 1254-1257. https://doi.org/10.1149/1.2412291

[5]. Chen, R. (1969b). Thermally stimulated current curves with non-constant recombination lifetime. Journal of Physics D: Applied Physics, 2(3), 371. https://doi.org/10. 1088/0022-3727/2/3/309

[6]. Dutczak, D., Milbrat, A., Katelnikovas, A., Meijerink, A., Ronda, C., & Jüstel, T. (2012). Yellow persistent luminescence of Sr₂SiO₄:Eu²⁺, Dy³⁺ . Journal of Luminescence, 132(9), 2398-2403. https://doi.org/10. 1016/j.jlumin.2012.03.055

[7]. Dexter, D. L. (1953). A theory of sensitized luminescence in solids. The Journal of Chemical Physics, 21(5), 836-850. https://doi.org/10.1063/1.1699044

[8]. Furetta, C. (2010). Handbook of Thermolumine Scence (2^nd Ed.). Singapore: World Scientific. https://doi.org/10.1142/5167

[9]. Feldmann, C., Jüstel, T., Ronda, C. R., & Schmidt, P. J. (2003). Inorganic luminescent materials: 100 years of research and application. Advanced Functional Materials, 13(7), 511-516. https://doi.org/10.1002/ad fm.200301005

[10]. Guo, H., Wang, X., Zhang, X., Tang, Y., Chen, L., & Ma, C. (2010). Effect of NH₄F flux on structural and luminescent properties of Sr SiO:Eu phosphors prepared by solid-state reaction method. Journal of the Electrochemical Society, 157(8), 310-314. https://doi.org/ 10.1149/1.3454723

[11]. Gökçe, M., Oğuz, K. F., Karali, T., & Prokic, M. (2009). Influence of heating rate on thermoluminescence of Mg₂SiO₄:Tb dosimeter. Journal of Physics D: Applied 2 4 Physics, 42(10), 105412-105416. https://doi.org/10.1088 /0022-3727/42/10/105412

[12]. Gou, Z., Chang, J., & Zhai, W. (2005). Preparation and characterization of novel bioactive dicalcium silicate ceramics. Journal of the European Ceramic Society, 25(9), 1507-1514. https://doi.org/10.1016/j.jeu rceramsoc.2004.05.029

[13]. Ichikawa, T., Inoue, Y. & Shibata, K. (1975). Characteristics of thermoluminescence bands of intact leaves and isolated chloroplasts in relation to the watersplitting activity in photosynthesis. Biochimicaet Biophysica Acta, 408(3), 228-239. https://doi.org/10. 1016/0005-2728(75)90126-7

[14]. Jüstel, T., Nikol, H., & Ronda, C. (1998). New developments in the field of luminescent materials for lighting and displays. Angewandte Chemie International Edition, 37(22), 3084-3103. https://doi.org/10.1002/ (SICI)1521-3773(19981204)37:22<3084::AID-ANIE3 084>3.0.CO;2-W

[15]. Kim, J. S., Jeon, P. E., Choi, J. C., & Park, H. L. (2005). Emission color variation of Mg₂SiO₄:Eu²⁺ (M＝ Ba, Sr, Ca) phosphors for light-emitting diode. Solid State Communications, 133,187-190. https://doi.org/10.1016 /j.ssc.2004.10.017

[16]. Lee, J. H., & Kim, Y. J. (2009). A correlation between a phase transition and luminescence properties of Sr₂SiO₄:Eu²⁺ prepared by a flux method. Journal of Ceramic Processing Research, 10(1), 81-84.

[17]. McKeever, S. W. (1988). Thermoluminescence of st Solids (1^stEd.). New York: Cambridge University Press.

[18]. Pan-Lai, L., Zhi-Ping, Y., Zhi-Jun, W., & Qing-Lin, G. (2008). Preparation and luminescence characteristics of Eu²⁺ activated silicate phosphor. Chinese PhysicsB, 17(3), 1135-1137. https://doi.org/10.1088/1674-1056/17/3/064.

[19]. Pagonis, V., Kitis, G., & Furetta, C. (2006). Numerical and Practical Exercises in Thermoluminescence. USA: Springer Science & Business Media.

[20]. Sahu, I. P., Bisen, D. P., & Brahme, N. (2014). Dysprosium doped di-strontium magnesium di-silicate white light emitting phosphor by solid state reaction method. Displays, 35(5), 279-286. https://doi.org/10. 1016/j.displa.2014.09.006 Sr₂SiO₄

[21]. Stenberg, L., & Hyde, B. G. (1986). A preliminary electron-microscope study of the β α' transformation of distrontium silicate, . Acta Crystallographica Section B: Structural Science, 42(5), 417-422. https://doi.org/10.1107/S010876818609794X

[22]. Tamrakar, R. K., Bisen, D. P., Sahu, I. P., & Brahme, N. (2014). UV and gamma ray induced thermolumine scence properties of cubic Gd₂O₃ :Er³⁺ phosphor. Journal of Radiation Research and Applied Science, 7(4), 417- 429. https://doi.org/10.1016/j.jrras.2014.07.003

[23]. Yanmin, Q., Zhang, X., Xiao, Y. E., Yan, C., & Hai, G. (2009). Photoluminescent properties of Sr₂SiO₄: Eu²⁺ and Sr₂SiO₄ :Eu²⁺ phosphors prepared by solid-state reaction method. Journal of Rare Earths, 27(2), 323-326. https://doi.org/10.1016/S1002-0721(08)60243-4

[24]. Yuan, Z. X., Chang, C. K., Mao, D. L., & Ying, W. (2004). Effect of composition on the luminescent properties of Sr₄Al₁₄O₂₅ : Eu²⁺, Dy³⁺phosphors. Journal of Alloys and Compound, 377(1), 268-271. https://doi.org/ 10.1016/j.j allcom.2004.01.063

[25]. Zhang, Y., Chen, X. L., Liang, J. K., & Xu, T. (2003). Phase relations of the system Li₂O-Gd₂O₃ -B₂O₃ and the structure of a new ternary compound. Journal of Alloys and Compound, 348(1), 314-318. https://doi.org/10.10 16/S0925-8388(02)00843-5

Full Article (HTML)

Pdf

Research Paper

Structural, Optical, Magnetic Properties of CuFe₂O₄, BaFe₂O₄Nano-Particle Synthesized via Hydrothermal Synthesis

U. Naresh* , R. Jeevan Kumar**

*_** Department of Physics, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India.

Naresh, U., and Kumar, R. J. (2019). Structural, Optical, Magnetic Properties of CuFe₂O₄, BaFe₂O₄Nano-Particle Synthesized via Hydrothermal Synthesis. i-manager’s Journal on Material Science, 7(3), 8-15. https://doi.org/10.26634/jms.7.3.15753

Abstract

The study of structural, optical, magnetic properties of Copper Ferrite Nanoparticles (CFN), Barium Ferrite Nanoparticles (BFN) prepared through the hydrothermal technique was carried out. The X-Ray Diffraction (XRD) pattern illustrates the formation of a single phase of face-centeredcubic structure for the CFN particles and orthorhombic structure for the BFN particles. Fourier Transform Infrared spectroscopy (FTIR) spectra revealed the confirmation of spinel form by attributing octahedral and tetrahedral bond vibrations at ν₁, ν₂ wave numbers respectively. UV–Visible spectroscopy technique was employed to determine the energy band gap. Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM) images have shown the surface morphology as stone like particle with the agglomeration of nanoparticles, whereas Energy Dispersive X-ray spectrum (EDX) shows synthesized samples elemental evidence accurately as per the calculation. Moreover, the vibrating sample magnetometer measurements represent the particle that exhibits the super paramagnetic nature of hydrothermally synthesized copper ferrite particle.

References

[1]. Abdellahi, M., Nejad, M. G., Saber-Samandari, S., & Khandan, A. (2017). Study of the effect of the Zn+2 content on the anisotropy and specific absorption rate of the cobalt ferrite: the application of Co1-xZnxFe₂O₄ ferrite for magnetic hyperthermia. Journal of Australian Ceramic Society, 54(2), 223-230. https://doi.org/10.1007/s41779-017-0144-5

[2]. Anjana, V., John, S., Prakash, P., Nair, A. M., Nair, A. R., Sambhudevan, S., & Shankar, B. (2018, February). Magnetic properties of copper doped nickel ferrite nanoparticles synthesized by Co precipitation method. In IOP Conference Series: Materials Science and Engineering, 310(1), 012024. https://doi.org/10.1088/17 57-899X/310/1/012024 .

[3]. Chen, Z., Wen, X., & Chen, C. (2018). Substratedependent structure, magnetic, and ferroelectric properties of Multiferroic Bi Ba FeO thin film. Journal of 0.9 0.1 3 Superconductivity and Novel Magnetism, 1-7, 2595- 2601. https://doi.org/10.1007/s10948-017-4524-4

[4]. Costa, A. F., Pimentel, P. M., Aquino, F. M., Melo, D. M. A., Melo, M. A. F., & Santos, I. M. G. (2013). Gelatin synthesis of CuFe₂O₄ and CuFeCrO₄ ceramic pigments. Materials Letters, 112, 58-61. https://doi.org/10.1016/j. matlet.2013. 08.044

[5]. Cross, W. B., Affleck, L., Kuznetsov, M. V., Parkin, I. P., & Pankhurst, Q. A. (1999). Self-propagating hightemperature synthesis of ferrites MFe₂O₄ (M= Mg, Ba, Co, Ni, Cu, Zn); reactions in an external magnetic field. Journal of Materials Chemistry, 9(10), 2545-2552. https://doi.org/10.1039/A904431K

[6]. Farid, M. T., Ahmad, I., Kanwal, M., Murtaza, G., Ali, I., Ashiq, M. N., & Khan, S. A. (2017). Magnetic and electric behavior of praseodymium substituted CuPryFe₂-yO₄ ferrites. Journal of Magnetism and Magnetic Materials, 422, 337-343. https://doi.org/10.1016/j.jmmm.2016.09. 016

[7]. Hashim, M., Raghasudha, M., Shah, J., Shirsath, S. E., Ravinder, D., Kumar, S., ... & Kotnala, R. K. (2018). High temperature dielectric studies of indium-substituted NiCuZn nanoferrites. Journal of Physics and Chemistry of Solids, 112, 29-36. https://doi.org/10.1016/j.jpcs.2017. 08.022

[8]. Kumar, N. S., Suvarna, R. P., & Naidu, K. C. B. (2019). Grain and grain boundary conduction mechanism in solgel synthesized and microwave heated Pb_0.8 - yLayCo_0.2TiO₃ (y= 0.2–0.8) nanofibers. Materials Chemistry and Physics, 223, 241-248. https://doi.org/ 10.1016/j.ceramint.2018.07.027

[9]. Kumar, N. S., Suvarna, R. P., Naidu, K. C. B., Kumar, G. R., & Ramesh, S. (2018). Structural and functional properties of sol-gel synthesized and microwave heated Pb_0.8Co_0.2 -zLazTiO₃ (z= 0.05–0.2) nanoparticles. Ceramics International, 44(16), 19408-19420. https://doi.org/10. 1016/j.ceramint.2018.07.176

[10]. Lou, Z., He, M., Wang, R., Qin, W., Zhao, D., & Chen, C. (2014). Large-scale synthesis of monodisperse magnesium ferrite via an environmentally friendly molten salt route. Inorganic Chemistry, 53(4), 2053-2057. https://doi.org/10.1021/ic402558t

[11]. Mansour, S. F., Abdo, M. A., & Kzar, F. L. (2018). Effect of Cr dopant on the structural, magnetic and dielectric properties of Cu-Zn nanoferrites. Journal of Magnetism and Magnetic Materials, 465, 176-185. https://doi.org/ 10.1016/j.jmmm.2018.05.104

[12]. Naidu, K. C. B., & Madhuri, W. (2017). Microwave processed bulk and nano NiMg ferrites: A comparative study on X-band electromagnetic interference shielding properties. Materials Chemistry and Physics, 187, 164- 176. https://doi.org/10.1016/j.matchemphys.201 6.11.062

[13]. Naidu, K. C. B., & Wuppulluri, M. (2018). Ceramic nanoparticle synthesis at lower temperatures for LTCC and MMIC Technologies. IEEE Transactions on Magnetics, 54(9), 1-8. https://doi.org/10.1109/TMAG.2018.2855663

[14]. Naresh, U., Kumar, R. J., & Naidu, K. C. B. (2019). Optical, magnetic and ferroelectric properties of Ba_0.2Cu_0.8 -xLaxFe₂O₄ (x= 0.2–0.6) nanoparticles. Ceramics International, 45(6), 7515-7523. https://doi.org/10.1016 /j.ceramint.2019.01.044

[15]. Ramaprasad, T., Kumar, R. J., Naresh, U., Prakash, M., Kothandan, D., & Naidu, K. C. B. (2018). Effect of pH value on structural and magnetic properties of CuFe₂O₄ nanoparticles synthesized by low temperature hydrothermal technique. Materials Research Express, 5 (9), 095025. https://doi.org/10.10888/2053-1591/aad860

[16]. Shinde, S. R., Kulkarni, S. D., Banpurkar, A. G., Nawathey-Dixit, R., Date, S. K., & Ogale, S. B. (2000). Magnetic properties of nanosized powders of magnetic oxides synthesized by pulsed laser ablation. Journal of Applied Physics, 88(3), 1566-1575. https://doi.org/10.1 063/1.373856

[17]. Singh, A., Singh, A., Singh, S., Tandon, P., & Yadav, R. R. (2016). Synthesis, Characterization and Gas Sensing Capability of NixCu1-xFe₂O₄ (0.0 aecurrency sign x aecurrency sign 0.8) Nanostructures Prepared via Sol-Gel Method. Journal of Inorganic and Organometallic Polymers and Materials, 26 (6), 1392-1403.https://doi.org/10.1007/s10904-016-0428-1

[18]. Vadivelan, S., & Jaya, N. V. (2016). Investigation of magnetic and structural properties of copper substituted barium ferrite powder particles via co-precipitation method. Results in Physics, 6, 843-850. https://doi.org/10. 1016/j.rinp.2016.07.013

[19]. Zhang, Y., & Stangle, G. C. (1994). Preparation of fine multicomponent oxide ceramic powder by a combustion synthesis process. Journal of Materials Research, 9(8), 1997-2004. https://doi.org/10.1557/JMR. 1994.1997

Full Article (HTML)

Pdf

Research Paper

Structures and Properties of Biopolymer Chitosan - A First Principle Study

Upma* , Mohan L. Verma**

*_** Department of Applied Physics, Shri Shankaracharya Group of Institutions (Shri Shankaracharya Technical Campus), Bhilai, Chhattisgarh, India.

Upma and Verma, M. L. (2019). Structures and Properties of Biopolymer Chitosan - A First Principle Study. i-manager’s Journal on Material Science, 7(3), 16-30. https://doi.org/10.26634/jms.7.3.15642

Abstract

The structural, electronic and chemical bonding properties of biopolymer chitosan in tetramer structures are investigated by using density functional theory. These polymer structures exhibit structural activity relationship because the activity of these polymer isomers varies with the structural modification and molecular weight. In this approach the Generalized Gradient Approximation (GGA) is used for the exchange-correlation potential. In density of states analysis the calculated forbidden energy gap is reduced by 2.23eV for cis-chitosan structure, deduces its semi-conducting behaviour with decreased crystallinity and improved bioactivity. Hirshfeld population and charge density techniques are used to analyse electrostatic interactions and the charge distribution within these molecules. Crystal orbital overlap population shows ionic interactions and provide chemical bonding information. Modification of chitosan improves the properties and provides the better functionally improved bio-polymer. This study is aimed to be used in various chemical industries, pharmaceutical and biomedical fields.

References

[1]. Abdallah, H. H., Gadzhiev, O. B., & Adnan, R. (2009, November). Comparative study of theoretical partial charges of Zn and Mn-Schiff base complexes. In 13^th International Electronic Conference on Synthetic Organic Chemistry (Vol. 13, pp. 1-10). MDPI. https://doi.org/10.3390/ecsoc-13-00245

[2]. Akman, F. (2017). Prediction of chemical reactivity of cellulose and chitosan based on density functional theory. Cellulose Chemistry and Technology, 51(3-4), 253-262.

[3]. Amorim, R. G., Zhong, X., Mukhopadhyay, S., Pandey, R., Rocha, A. R., & Karna, S. P. (2013). Strain-and electric field-induced band gap modulation in nitride nanomembranes. Journal of Physics: Condensed Matter, 25 (19), 195801. https://doi.org/10.1088/0953-8984/25/19/195801

[4]. An, H., Liang, H., Liu, Z., Yang, H., Liu, Q., & Wang, H. (2011). Nanostructures of debranched potato starch obtained by isoamylolysis. Journal of Food Science, 76(1), N11-N14. https://doi.org/10.1111/j.1750- 3841.2010.01881.x

[5]. Artacho, E., Cela, J. M, Gale, J. D., Garcia, A., Junquera, J., Martin, R. M, Ordejon, P., Portal, D. S., & Soler J. M. (2011). SIESTA 3.1. Fundacion General Universidad Autonoma de Madrid, Madrid.

[6]. Badawy, M. E., & Rabea, E. I. (2011). A biopolymer chitosan and its derivatives as promising antimicrobial agents against plant pathogens and their applications in crop protection. International Journal of Carbohydrate Chemistry, 2011, 1-48. https://doi.org/10.1155/2011/ 460381

[7]. Bultinck, P., Van Alsenoy, C., Ayers, P. W., & Carbó- Dorca, R. (2007). Critical analysis and extension of the Hirshfeld atoms in molecules. The Journal of Chemical Physics, 126(14), 144111. https://doi.org/10.1063/1.2 715563

[8]. Chang, S. H., Wu, C. H., & Tsai, G. J. (2018). Effects of chitosan molecular weight on its antioxidant and antimutagenic properties. Carbohydrate Polymers, 181, 1026-1032. https://doi.org/10.1016/j.carbpol.2017.11. 047

[9]. Chien, P. J., Sheu, F., Huang, W. T., & Su, M. S. (2007). Effect of molecular weight of chitosans on their antioxidative activities in apple juice. Food Chemistry, 102(4), 1192-1198. https://doi.org/10.1016/j.foodchem. 2006.07.007

[10]. Demazeau, G., Matar, S. F., & Poettgen, R. (2007). Chemical bonding in metallic rutile-type oxides TO₂(T= Ru, Rh, Pd, Pt). Zeitschrift für Naturforschung B, 62(7), 949- 954. https://doi.org/10.1515/znb-2007-0712

[11]. Djurovich, P. I., Mayo, E. I., Forrest, S. R., & Thompson, M. E. (2009). Measurement of the lowest unoccupied molecular orbital energies of molecular organic semiconductors. Organic Electronics, 10(3), 515-520. https://doi.org/10.1016/j.orgel.2008.12.011

[12]. Dutta, P. K., Dutta, J., & Tripathi, V. S. (2004). Chitin and chitosan: Chemistry, properties and applications. Journal of Scientific and Industrial Research, 63(1), 20-31.

[13]. Franca, E. F., Lins, R. D., Freitas, L. C., & Straatsma, T. P. (2008). Characterization of chitin and chitosan molecular structure in aqueous solution. Journal of Chemical Theory and Computation, 4(12), 2141-2149. https://doi.org/ 10.1021/ct8002964

[14]. Goy, R. C., Britto, D. D., & Assis, O. B. (2009). A review of the antimicrobial activity of chitosan. Polímeros, 19(3), 241-247. https://doi.org/10.1590/S0104-14282009000 300013

[15]. Goy, R. C., Morais, S. T., & Assis, O. B. (2016). Evaluation of the antimicrobial activity of chitosan and its quaternized derivative on E. coli and S. aureus growth. Revista Brasileira de Farmacognosia, 26(1), 122-127. https://doi.org/10.1016/j.bjp.2015.09.010

[16]. Gray, F. M. (1997). Polymer Electrolytes. Cambridge: The Royal Society of Chemistry. https://doi.org/10. 1002/(SICI)1097-0126(199805)46:1<78::AID-PI16>3.0. CO;2-I

[17]. Gryczka, U., Gawrońska, A., Migdał, W., Gawroński, S. W., & Chmielewski, A. G. (2008). Study on biological activity of chitosan after radiation processing. Nukleonika, 53(Supplement 2):S73−S76.

[18]. Hafdani, F. N., & Sadeghinia, N. (2011). A review on application of chitosan as a natural antimicrobial. World Academy of Science, Engineering and Technology, 50, 252-256. https://doi.org/10.5281/zenodo.1062688

[19]. Hanwell, M. D., Curtis, D. E., Lonie, D. C., Vandermeersch, T., Zurek, E., & Hutchison, G. R. (2012). Avogadro: An advanced semantic chemical editor, visualization, and analysis platform. Journal of Cheminformatics, 4(1), 17. https://doi.org/10.1186/1758- 2946-4-17

[20]. He, H., Pandey, R., Boustani, I., & Karna, S. P. (2010). Metal-like electrical conductance in boron fullerenes. The Journal of Physical Chemistry C, 114(9), 4149-4152. https://doi.org/10.1021/jp9095776

[21]. Hirshfeld, F. L. (1977). Bonded-atom fragments for describing molecular charge densities. Theoretica Chimica Acta, 44(2), 129-138. https://doi.org/10.1007 /BF00549096

[22]. Hughbanks, T., & Hoffmann, R. (1983). Chains of trans-edge-sharing molybdenum octahedra: Metalmetal bonding in extended systems. Journal of the American Chemical Society, 105(11), 3528-3537. https://doi.org/10.1021/ja00349a027

[23]. Jiao, G., Yu, G., Zhang, J., & Ewart, H. (2011). Chemical structures and bioactivities of sulfated polysaccharides from marine algae. Marine Drugs, 9(2), 196-223. https://doi.org/10.3390/md9020196

[24]. Kamala, K., Sivaperumal, P., & Rajaram, R. (2013). Extraction and characterization of water soluble chitosan from parapeneopsis stylifera shrimp shell waste and its antibacterial activity. International Journal of Scientific and Research Publications, 3( 4), 1-8.

[25]. Kawada, J., Yui, T., Okuyama, K., & Ogawa, K. (2001). Crystalline behavior of chitosan organic acid salts. Bioscience, Biotechnology, and Biochemistry, 65(11), 2542-2547. https://doi.org/10.1271/bbb.65.2542

[26]. Kim, S. (2018). Competitive biological activities of chitosan and its derivatives: Antimicrobial, antioxidant, anticancer, and anti-inflammatory activities. International Journal of Polymer Science, 2018. https://doi.org/10.1155/2018/1708172

[27]. Kurita, K. (2006). Chitin and chitosan: functional biopolymers from marine crustaceans. Marine Biotechnology, 8(3), 203-226. https://doi.org/10.1007/ s10126-005-0097-5

[28]. Li, S., Xiong, Q., Lai, X., Li, X., Wan, M., Zhang, J., ... & Zhang, D. (2016). Molecular modification of polysaccharides and resulting bioactivities. Comprehensive Reviews in Food Science and Food Safety, 15(2), 237-250. https://doi.org/10.1111/1541- 4337.12161

[29]. Liu, N., Chen, X. G., Park, H. J., Liu, C. G., Liu, C. S., Meng, X. H., & Yu, L. J. (2006). Effect of MW and concentration of chitosan on antibacterial activity of Escherichia coli. Carbohydrate Polymers, 64(1), 60-65. https://doi.org/10.1016/j.carbpol.2005.10.028

[30]. Luo, X. L., Xu, J. J., Du, Y., & Chen, H. Y. (2004). A glucose biosensor based on chitosan–glucose oxidase–gold nanoparticles biocomposite formed by one-step electrodeposition. Analytical Biochemistry, 334 (2), 284-289. https://doi.org/10.1016/j.ab.2004.07.005

[31]. Marenich, A. V., Jerome, S. V., Cramer, C. J., & Truhlar, D. G. (2012). Charge model 5: An extension of Hirshfeld population analysis for the accurate description of molecular interactions in gaseous and condensed phases. Journal of Chemical Theory and Computation, 8(2), 527-541. https://doi.org/10.1021/ct200866d

[32]. Martins, A. F., Facchi, S. P., Follmann, H. D. M., Pereira, A. G. B., Rubira, A. F., & Muniz, E. C. (2014). Antimicrobial activity of chitosan derivatives containing n-quaternized moieties in its backbone: A review. International Journal of Molecular Sciences, 15(11), 20800-20832. https://doi.org/10.3390/ijms151120800

[33]. Matar, S. F., & Kfoury, C. N. (2016). Electronic and magnetic structures and bonding properties of Ce₂CrN₃ and U₂CrN₃ from first principles. Computational Condensed Matter, 9, 13-18. https://doi.org/10.101 6/j.cocom.2016.08.002

[34]. Matar, S. F., Pöttgen, R., Al Alam, A. F., & Ouaini, N. (2012). Electronic structure and chemical bonding of Li4Pt3Si. Chemical Physics Letters, 542, 47-51. https://doi.org/10.1016/j.cplett.2012.05.075

[35]. Matczak, P. (2016). A test of various partial atomic charge models for computations on diheteroaryl ketones and thioketones. Computation, 4(1), 1-13. https://doi.org/ 10.3390/computation4010003

[36]. Metzler, M., Chylińska, M., & Kaczmarek, H. (2015). Preparation and characteristics of nanosilver composite based on chitosan-graft-acrylic acid copolymer. Journal of Polymer Research, 22(8), 146. https://doi.org/10.1007 /s10965-015-0781-8

[37]. Mourya, V. K., & Inamdar, N. N. (2008). Chitosan-modifications and applications: Opportunities galore. Reactive and Functional Polymers, 68(6), 1013-1051. https://doi.org/10.1016/j.reactfunctpolym.2008.03.002

[38]. No, H. K., & Meyers, S. P. (1989). Crawfish chitosan as a coagulant in recovery of organic compounds from seafood processing streams. Journal of Agricultural and Food Chemistry, 37(3), 580-583. https://doi.org/10.1021/ jf00087a002

[39]. Okuyama, K., Noguchi, K., Kanenari, M., Egawa, T., Osawa, K., & Ogawa, K. (2000). Structural diversity of chitosan and its complexes. Carbohydrate Polymers, 41(3), 237-247. https://doi.org/10.1016/S0144- 8617(99)00142-3

[40]. Ostrowska-Czubenko, J., Gierszewska, M., & Pieróg, M. (2015). pH-responsive hydrogel membranes based on modified chitosan: Water transport and kinetics of swelling. Journal of Polymer Research, 22(8), 153. https://doi.org/10.1007/s10965-015-0786-3

[41]. Oyebamiji, A. K., & Semire, B. (2016). Studies of anti-hypertensive activity of 1, 4-dihydropyridine derivatives: Combinations of DFT-QSAR and docking approaches. Bulletin of Pharmaceutical Research, 6(3), 105-113. https://doi.org/10.21276/bpr.2016.6.3.4

[42]. Pearson, R. G. (1963). Hard and soft acids and bases. Journal of the American Chemical Society, 85(22), 3533-3539. https://doi.org/10.1021/ja00905a001

[43]. Pearson, R. G. (1986). Absolute electronegativity and hardness correlated with molecular orbital theory. Proceedings of the National Academy of Sciences, 83(22), 8440-8441. https://doi.org/10.1073/pnas.83. 22.8440

[44]. Perdew, J. P., & Zunger, A. (1981). Self-interaction correction to density-functional approximations for many-electron systems. Physical Review B, 23(10), 5048. https://doi.org/10.1103/PhysRevB.23.5048

[45]. Ramkumar, R., & Sundaram, M. M. (2016a). A biopolymer gel-decorated cobalt molybdate nanowafer: Effective graft polymer cross-linked with an organic acid for better energy storage. New Journal of Chemistry, 40(3), 2863-2877. https://doi.org/10.1 039/C5NJ02799C

[46]. Ramkumar, R., & Sundaram, M. M. (2016b). Electrochemical synthesis of polyaniline cross-linked NiMoO 4 nanofibre dendrites for energy storage devices. New Journal of Chemistr y, 40(9), 7456-7464. https://doi.org/10.1039/C6NJ00521G

[47]. Rangel, T., Rignanese, G. M., & Olevano, V. (2015). Can molecular projected density of states (PDOS) be systematically used in electronic conductance analysis?. Beilstein Journal of Nanotechnology, 6(1), 1247-1259. https://doi.org/10.3762/bjnano.6.128

[48]. Ravindran, P., & Asokamani, R. (1997). Correlation between electronic structure, mechanical properties and phase stability in intermetallic compounds. Bulletin of Materials Science, 20(4), 613-622. https://doi.org/10. 1007/BF02744780

[49]. Reshak, A. H., Alahmed, Z. A., & Azam, S. (2014). Electronic structure, electronic charge density and optical properties analyses of Rb Al B O compound: DFT Calculation. International Journal of Electrochemical Science, 9, 975-989.

[50]. Sahariah, P., & Masson, M. (2017). Antimicrobial chitosan and chitosan derivatives: A review of the structure–activity relationship. Biomacromolecules, 18(11), 3846-3868. https://doi.org/10.1021/acs.biomac. 7b01058

[51]. Selvaraju, K., Jothi, M., & Kumaradhas, P. (2013). A charge density analysis on quarter thiophene molecular nanowire under applied electric field: A theoretical study. Journal of Computational and Theoretical Nanoscience, 10(2), 357-367. https://doi.org/10.1166/jctn.2013.2705

[52]. Shafiee, A., Salleh, M. M., & Yahaya, M. (2011). Determination of HOMO and LUMO of [6, 6]-phenyl C61- butyric acid 3-ethylthiophene ester and poly (3-octylthiophene- 2, 5-diyl) through voltametry characterization. Sains Malaysiana, 40(2), 173-176.

[53]. Skovstrup, S., Hansen, S. G., Skrydstrup, T., & Schiøtt, B. (2010). Conformational flexibility of chitosan: A molecular modeling study. Biomacromolecules, 11(11), 3196-3207. https://doi.org/10.1021/bm100736w

[54]. Soler, J. M., Artacho, E., Gale, J. D., García, A., Junquera, J., Ordejón, P., & Sánchez-Portal, D. (2002). The SIESTA method for ab initio order-N materials simulation. Journal of Physics: Condensed Matter, 14(11), 2745-2779. https://doi.org/10.1088/0953-8984/14/11 /302

[55]. Tan, J., Guo, L., Lv, T., & Zhang, S. (2015). Experimental and computational evaluation of 3- indolebutyric acid as a corrosion inhibitor for mild steel in sulfuric acid solution. International Journal of Electrochemical Science, 10, 823-837. https://doi.org/ 10.1088/0953-8984/25/1 9/195801

[56]. Tang, Z. X., Qian, J. Q., & Shi, L. E. (2007). Characterizations of immobilized neutral lipase on chitosan nano-particles. Materials Letters, 61(1), 37-40. https://doi.org/10.1016/j.matlet.2006.04.048

[57]. Tyliszczak, B., Drabczyk, A., Kudłacik-Kramarczyk, S., Bialik-Wąs, K., & Sobczak-Kupiec, A. (2017). In vitro cytotoxicity of hydrogels based on chitosan and modified with gold nanoparticles. Journal of Polymer Research, 24(10), 153. https://doi.org/10.1007/s10965-017-1315-3

[58]. Ugwu, D. I., Ezema, B. E., Eze, F. U., & Ugwuja, D. I. (2014). Synthesis and structural activity relationship study of antitubercular carboxamides. International Journal of Medicinal Chemistry, 2014,1-18. https://doi.org/10. 1155/2014/614808

[59]. Wang, B., Li, S. L., & Truhlar, D. G. (2014). Modeling the partial atomic charges in inorganometallic molecules and solids and charge redistribution in lithium-ion cathodes. Journal of Chemical Theory and Computation, 10(12), 5640-5650. https://doi.org/10. 1021/ct500790p

[60]. Wen, S., Guan, W., Wang, J., Lang, Z., Yan, L., & Su, Z. (2012). Theoretical investigation of structural and electronic propertyies of [PW12O40]3− on graphene layer. Dalton Transactions, 41(15), 4602-4607. https://doi.org/10.1039/C2DT12465C

[61]. Wu, Y., Yang, W., Wang, C., Hu, J., & Fu, S. (2005). Chitosan nanoparticles as a novel delivery system for ammonium glycyrrhizinate. International Journal of Pharmaceutics, 295(1-2), 235-245. https://doi.org/ 10.1016/j.ijpharm.2005.01.042

[62]. Yang, M., Yang, Y., Liu, B., Shen, G., & Yu, R. (2004). Amperometric glucose biosensor based on chitosan with improved selectivity and stability. Sensors and Actuators B: Chemical, 101(3), 269-276. https://doi.org/10.1016/ j.snb.2004.01.003

[63]. Yin, B., Yuan, R., Chai, Y., Chen, S., Cao, S., Xu, Y., & Fu, P. (2008). Amperometric glucose biosensors based on layer-by-layer assembly of chitosan and glucose oxidase on the Prussian blue-modified gold electrode. Biotechnology Letters, 30(2), 317-322. https://doi.org/ 10.1007/s10529-007-9534-z

Full Article (HTML)

Pdf

Research Paper

Physical and Structural Properties Conformed the Role of Al₂O₃ in Barium Alumino Borate Glasses Doped with Cr³⁺ ions

Mohamad Raheem Ahmed* , Ramdevudu Gokarakonda, Abdul Hameed, M. Narasimha Chary, MD Shareefuddin

* Department of Physics, Muffakhamjah college of Engineering and Technology, Osmania University, Hyderabad, Telangana, India.

Department of Physics, Nizam College, Osmania University, Hyderabad, Telangana, India.

* Department of Physics, Vasavi College of Engineering, Hyderabad, Telangana, India.

_*Department of Physics, Osmania University, Hyderabad, Telangana, India.

Ahmed, M. R., Gokarakonda, R., Hameed, A., Chary, M. N., and Shareefuddin, M. (2019). Physical and Structural Properties Conformed the Role of Al₂O₃ in Barium Alumino Borate Glasses Doped with Cr³⁺ ions. i-manager’s Journal on Material Science, 7(3), 31-36. https://doi.org/10.26634/jms.7.3.16373

Abstract

Barium alumino borate glasses are prepared for the composition (30-x) BaO-xAl₂O₃-69.8B₂O₃-0.2Cr₂O₃ (0 ≤ x≤ 15 mol %) to be specified as BABCrsynthesized by making the use of melt quenching process. These glasses are analyzed using different instrumental techniques. X-Ray Diffraction (XRD) is used to ascertain the glassy nature. Various physical properties are carried out to get the information regarding BO₃, BO₄ and NBO's. From the observation of Differential Scanning Calorimetry (DSC) spectra, Tg decreases in accordance with increasing the amount of Al₂O₃ content. In the present study, the addition of Al₂O₃ to the BaO-B₂O₃ glass is studied and its role in the glass is being observed by Fourier Transform Infrared Spectroscopy (FT-IR) vibrational spectra. From Raman studies of BABCr glasses,it is observed that thepresence of Al-O-Al linkages and AlO₄ units in the region 500 to 780 cm^-1. The large segment of B-O groups observed at higher wavelength of Raman spectra. The increment of Al₂O₃ content in the glass composition results the increment in Raman intensity.

References

[1]. Ahmed, M. R., Sekhar, K. C., Hameed, A., Chary, M. N., & Shareefuddin, M. (2018). Role of aluminum on the physical and spectroscopic properties of chromiumdoped strontium alumino borate glasses. International Journal of Modern Physics B, 32(08), 1850095. https://doi.org/10.1142/S0217979218500959

[2]. Arunkumar, S., & Marimuthu, K. (2013). Concentration effect of Sm³⁺ ions in B₂O₃ –PbO–PbF₂ –Bi₂O₃ –ZnO glasses – Structural and luminescence investigations. Journal of alloys and compounds, 565, 104-114. https://doi.org/10. 1016/j.jallcom.2013.02.151

[3]. Bengisu, M. (2016). Borate glasses for scientific and industrial applications: A review. Journal of Materials Science, 51(5), 2199-2242. https://doi.org/10.1007/ s10853-015-9537-4

[4]. Duffy, J. A. (2006). Ionic− covalent character of metal and nonmetal oxides. The Journal of Physical Chemistry A, 110(49), 13245-13248. https://doi.org/10.1021/jp0638 46j

[5]. Gautam, C., Yadav, A. K., & Singh, A. K. (2012). A review on infrared spectroscopy of borate glasses with effects of different additives. International Scholarly Research Network Ceramics, 1-7. https://doi.org/10.54 02/2012/4 28497

[6]. Karthikeyan, B., & Mohan, S. (2003). Structural, optical and glass transition studies on Nd³⁺-doped lead bismuth borate glasses. Physica B: Condensed Matter, 334(3-4), 298-302. https://doi.org/10.1016/S0921-4526(03)00080- 2

[7]. Kim, E. A., Choi, H. W., & Yang, Y. S. (2015). Effects of Al₂O₃ on (1-x) [SrO–SiO₂–B₂O₃]–xAl₂O₃ glass sealant for intermediate temperature solid oxide fuel cell. Ceramics International, 41(10), 14621-14626. https://doi.org/10. 1016/j.ceramint.2015.07.182

[8]. Li, H., Su, Y., Li, L., & Strachan, D. M. (2001). Raman spectroscopic study of gadolinium (III) in sodiumaluminoborosilicate glasses. Journal of Non-Crystalline Solids, 292(1-3), 167-176. https://doi.org/10.1016/S0022- 3093(01)00878-X

[9]. Mohan, S., Thind, K. S., & Sharma, G. (2007). Effect of Nd³⁺ concentration on the physical and absorption properties of sodium-lead-borate glasses. Brazilian Journal of Physics, 37(4), 1306-1313. https://doi.org/ 10.1590/S0103-97332007000800019

[10]. Mohini, G. J., Krishnamacharyulu, N., Baskaran, G. S., Rao, P. V., & Veeraiah, N. (2013). Studies on influence of aluminium ions on the bioactivity of B₂O₃ –SiO₂– P₂O₅ – N a₂O –CaO glass system by means of spectroscopic studies. Applied Surface Science, 287, 46- 53. https://doi.org/10.1016/j.apsusc.2013.09.055

[11]. Neuville, D. R., Cormier, L., & Massiot, D. (2004). Al environment in tectosilicate and peraluminous glasses: A 27Al MQ-MAS NMR, Raman, and XANES investigation. Geochimica et Cosmochimica Acta, 68(24), 5071-5079. https://doi.org/10.1016/j.gca.2004.05.048

[12]. Phani, A. L., Sekhar, K. C., Chakradhar, R. P. S., Chary, M. N., & Shareefuddin, M. (2018). EPR and FTIR spectroscopic studies of MO-Al₂O₃-Bi₂O₃ -B₂O₃ -MnO₂ (M= Pb, Zn, and Cd) glasses. Materials Research Express, 5(3), 035204. https://doi.org/10.1088/2053-1591/aab64d

[13]. Rada, S., Culea, M., Rada, M., Pascuta, P., Maties, V., & Culea, E. (2009). The double role played by the Gd₂O₃in the gadolinium–aluminum–borate–bismuthate quaternary glass forming tendency. GdBO₃ crystalline phase. Journal of Molecular Structure, 937(1-3), 70-74. https://doi.org/10.1016/j.molstruc.2009.08.016

[14]. Santos, C. N., De Sousa Meneses, D., Echegut, P., Neuville, D. R., Hernandes, A. C., & Ibanez, A. (2009). Structural, dielectric, and optical properties of yttrium calcium borate glasses. Applied Physics Letters, 94(15), 151901. https://doi.org/10.1063/1.3115796

[15]. Santos, S. N. C., Almeida, J. M. P., Paula, K. T., Tomazio, N. B., Mastelaro, V. R., & Mendonça, C. R. (2017). Characterization of the third-order optical nonlinearity spectrum of barium borate glasses. Optical Materials, 73, 16-19. https://doi.org/10.1016/j.optmat. 2017.06.060

[16]. Silim, H. A. (2006). Composition effect on some physical properties and FTIR spectra of alumino-borate glasses containing lithium, sodium, potassium and barium oxides. Egyptian Journal of Solids, 29(2), 293-301.

[17]. Singh, G. P., Kaur, P., Kaur, S., & Singh, D. P. (2011). Role of V₂O₅in structural properties. Materials Physics and Mechanics, 12, 58-63.

[18]. Yadav, A. K., Gautam, C. R., Gautam, A., & Mishra, V. K. (2013). Structural and crystallization behavior of (Ba, Sr) TiO₃ borosilicate glasses. Phase Transitions, 86(10), 1000- 1016. https://doi.org/10.1080/01411594.2012.747686

Full Article (HTML)

Pdf

Research Paper

Synthesis and Photoluminescence Studies of Rare Earth Doped [1.5%] CaO

Sharma Jitesh Chandrapal* , K. Suresh, Y. H. Gandhi*, K. V. R. Murthy****

* Department of Applied Sciences and Humanities, Parul Institute of Engineering and Technology, Parul University, Gujarat, India.

Department of Physics at VSR and NVR College, Andhra Pradesh, India.

*-**** Department of Applied Physics, Faculty of Technology and Engineering, Maharaja Sayajirao University of Baroda University of Baroda, Gujarat, India.

Chandrapal, S. J., Suresh, K., Gandhi, Y. H., and Murthy, K. V. R. (2019). Synthesis and Photoluminescence Studies of Rare Earth Doped [1.5%] CaO. i-manager’s Journal on Material Science, 7(3), 37-42. https://doi.org/10.26634/jms.7.3.16374

Abstract

Several phosphors synthesized by solid state reaction method of host material CaO with five different rare earth ions as dopants. Solid state method is a very useful method to synthesize oxide phosphors, here the authors synthesized five different rare earth doped CaO with precursors of host calcium oxide and five different rare earth oxide were doped at (1.5mol%) concentration. The RE³⁺ were taken in the form of (1) Samarium oxide Sm₂O₃ (2) Europium oxide Eu₂O₃ (3) Gadolinium oxide Gd₂O₃ (4) Terbium oxide Tb₂O₃ (5) Dysprosium oxide Dy₂O₃as raw materials. Study of photo luminescence spectra, XRD, SEM and FTIR were measured on the prepared samples. From the XRD pattern it is found that most of the phosphor is in single phase. From the peaks calculated average crystallite size is 46.5 nm using Scherer formula. From the PL study, the CaO: Eu phosphor shows, predominant red emission, CaO: Tb phosphor shows predominant green emission at 545nm, therefore these two phosphors may be a good candidates for red and green emission when used in near UV solid state light emitting diode (275nm excitation). The other CaO: Sm³⁺, CaO: Dy³⁺and CaO: Gd³⁺ phosphors are excited with 275nm shows common emission at 470nm (blue) is nearly the same with same intensity. These phosphors may be a good blue emitting phosphors for 275nm excitable from solid state Light Emitting Diode(LED).

References

[1]. Brauer, P. (1957). About Eu ions in alkaline earth oxides and sulfides. Journal of Natural Sciences A, 12 (3), 233- 240. https://doi.org/10.1515/Zna-1957-0310

[2]. Ewles, J., & Lee, N. (1953). Studies on the concept of large activator centers in crystal phosphors III. Preparation and properties of calcium oxide phosphors with eleven different activators. Journal of the Electrochemical Society, 100(9), 402-407. https://doi.org/10.1149/1. 2781140

[3]. Fonda, G. R. (1940). The preparation of fluorescent calcite. The Journal of Physical Chemistry, 44(4), 435-439. https://doi.org/10.1021/j150400a007

[4]. Fonda, G. R., & Froelich, H. C. (1949). Preparation and Characteristics of Luminescent Materials. New York: Wiley. (pp: 385).

[5]. Herzog, G., & Abel, W. (1970). Thermoluminescence of phosphors Cao-Sm and Cao-Bi (calcium oxidesamarium and-bismuth). Zeitschrift Fur Physikalische Chemie-Leipzig, 243(1-2), 32.

[6]. Herzog, G., & Raths, R. (1965). Contribution to the thermoluminescence of the samarium-activated calcium oxide. Journal of Physical Chemistry, 228 (1), 13-22.

[7]. Kröger, F. A., & Urbach, F. (1948). Some aspects of the luminescence of solids. Physics Today, 1(7), 1-24. https://doi.org/10.1063/1.3066188

[8]. Lehmann, W. (1970). Alkaline earth sulfide phosphors activated by copper, silver, and gold. Journal of The Electrochemical Society, 117(11), 1389-1393. https://doi.org/10.1149/1.2407328

[9]. Lehmann, W. (1971). On the optimum efficiency of cathodoluminescence of inorganic phosphors. Journal of The Electrochemical Society, 118(7), 1164-1166. https://doi.org/10.1149/1.2408273

[10]. Lehmann, W. (1973). Calcium oxide phosphors. Journal of luminescence, 6(5), 455-470. https://doi.org/ 10.1016/0022-2313(73)90014-8

[11]. Runciman, W. A. (1955). Atomic configurations in luminescent centres. British Journal of Applied Physics, 6(S4), S78. https://doi.org/10.1088/0508-3443/6/S4/331

[12]. Sancier, K. M., Fredericks, W. J., Hatchett, J. L., & Wise, H. (1962). Luminescence of solids excited by surface recombination of atoms. II. Recombination coefficients. The Journal of Chemical Physics, 37(4), 860- 864. https://doi.org/10.1063/1.1733174

[13]. Yen, W. Y., & Weber, M. J. (2004). Inorganic Phosphors: Compositions, Preparation and Optical Properties (1^stEd.). Boca Raton: CRC Press.

Full Article (HTML)

Pdf

Research Paper

Performance of Synthetic and Natural Polymer Blends using 3D Printing

Gajanan N. Thokal* , Chandrakant R. Patil**

*-** Department of Mechanical Engineering, Professor Ram Meghe Institute of Technology and Research, Maharashtra, India.

Thokal, G.N., and Patil, C. R. (2019). Performance of Synthetic and Natural Polymer Blends using 3D Printing. i-manager’s Journal on Material Science, 7(3), 43-52. https://doi.org/10.26634/jms.7.3.15595

Abstract

This study investigates the blends specimen prepared using synthetic polymer like polyamide12 (PA12) and natural polymer like Nanocrystalline Cellulose (NCC) with formic acid solution. The various composition mixtures of synthetic and natural polymer have been prepared. The processing conditions and their influence on mechanical properties of specimens manufactured were evaluated as well as its biomechanical performance was observed. The static tests were performed to evaluate the compressive stress as well as young's modulus. The porosity measurements were done using gas porosimeter to access the strength. It was found that PA12/NCC blends had bone matching properties of goat and confirms that this can be an alternate material for implant applications.

References

[1]. Abitbol, T., Rivkin, A., Cao, Y., Nevo, Y., Abraham, E., Ben-Shalom, T., ... & Shoseyov, O. (2016). Nanocellulose, a tiny fiber with huge applications. Current Opinion in Biotechnology, 39, 76-88. https://doi.org/10.1016/j. copbio.2016.01.002

[2]. An, Y. H., & Draughn, R. A. (1999). Mechanical Testing of Bone and the Bone-Implant Interface (1^st Ed.). CRC Press.

[3]. Campbell, M., Bureau, M. N., & Yahia, L. H. (2008). Performance of CF/PA12 composite femoral stems. Journal of Materials Science: Materials in Medicine, 19(2), 683-693. https://doi.org/10.1007/s10856-007-3073 -y

[4]. Carter, D. R., & Hayes, W. C. (1977). The compressive behavior of bone as a two-phase porous structure. The Journal of Bone and Joint Surgery. American volume, 59(7), 954-962. https://doi.org/10.2106/00004623- 197759070-00021

[5]. Choren, J. A., Heinrich, S. M., & Silver-Thorn, M. B. (2013). Young's modulus and volume porosity relationships for additive manufacturing applications. Journal of Materials Science, 48(15), 5103-5112. https://doi.org/10.1007/s10853-013-7237-5

[6]. Cooper, K. G. (2001). Rapid prototyping technology: Selection and application. Assembly Automation, 21(4), 358-359. https://doi.org/10.1108/aa.2001.21.4.358.1

[7]. Corrêa, A. C., de Morais Teixeira, E., Carmona, V. B., Teodoro, K. B. R., Ribeiro, C., Mattoso, L. H. C., & Marconcini, J. M. (2014). Obtaining nanocomposites of polyamide 6 and cellulose whiskers via extrusion and injection molding. Cellulose, 21(1), 311-322. https://doi.org/10.1007/s10570-013-0132-z

[8]. Giles Jr, H. F., Wagner Jr, J. R., & Mount III, E. M. (2005). Extrusion: The Definitive Processing Guide and Handbook. Norwich, New York: William Andrew.

[9]. Lee, K. Y., Aitomäki, Y., Berglund, L. A., Oksman, K., & Bismarck, A. (2014). On the use of nanocellulose as reinforcement in polymer matrix composites. Composites Science and Technology, 105, 15-27. https://doi.org/10. 1016/j.compscitech.2014.08.032

[10]. Lin, N., & Dufresne, A. (2014). Nanocellulose in biomedicine: Current status and future prospect. European Polymer Journal, 59, 302-325. https://doi.org/ 10.1016/j.eurpolymj.2014.07.025

[11]. Moon, R. J., Martini, A., Nairn, J., Simonsen, J., & Youngblood, J. (2011). Cellulose nanomaterials review: Structure, properties and nanocomposites. Chemical Society Reviews, 40(7), 3941-3994. https://doi.org/ 10.1039/C0CS00108B

[12]. Mueller, B. (2012). Additive manufacturing technologies–Rapid prototyping to direct digital manufacturing. Assembly Automation, 32 (2).https://doi.org/10.1108/aa.2012.03332baa.010

[13]. Rahim, T. N. A. T., Abdullah, A. M., Akil, H. M., & Mohamad, D. (2016, December). Comparison of mechanical properties for polyamide 12 compositebased biomaterials fabricated by fused filament fabrication and injection molding. In AIP Conference Proceedings (Vol. 1791, No. 1, p. 020007). AIP Publishing. https://doi.org/10.1063/1.4968862

[14]. Rauwendaal, C. (2014). Polymer Extrusion (5^th Ed.). Munich, Germany: Carl Hanser Verlag GmbH & Co. KG. https://doi.org/10.3139/9781569905395

[15]. Rhee, S., & White, J. L. (2002). Crystal structure and morphology of biaxially oriented polyamide 12 films. Journal of Polymer Science Part B: Polymer Physics, 40(12), 1189-1200. https://doi.org/10.1002/polb.10181

[16]. Slotwinski, J. A., & Garboczi, E. J. (2015). Metrology needs for metal additive manufacturing powders. Jom, 67(3), 538-543. https://doi.org/10.1007/s11837-014- 1290-7

[17]. Speidel, M. O., & Uggowitzer, P. J. (1998). Materials in Medicine. Switzerland: Vdf Hochschulverlag AG.

Full Article (HTML)

Pdf

Research Paper

Experimental Investigation on Strength Properties of Ultrafine Fly Ash and Micro Silica as Mineral Admixtures for Vermiculite Mortar

M. V. S. S. Sastri* , P. Ashveen Kumar, K. Jagannadha Rao*

* Department of Civil Engineering, Vasavi College of Engineering, Hyderabad, Telangana, India.

Department of Civil Engineering, Matrusree Engineering College, Hyderabad, Telangana, India.

* Department of Civil Engineering, Chaitanya Bharathi Institute of Technology, Hyderabad, Telangana, India.

Sastri M. V. S. S., Kumar, D. A., and Rao, K. J. (2019). Experimental Investigation on Strength Properties of Ultrafine Fly Ash and Micro Silica as Mineral Admixtures for Vermiculate Mortar. i-manager’s Journal on Material Science, 7(3), 53-62. https://doi.org/10.26634/jms.7.3.16588

Abstract

Concrete is mostly used as a building material and while preparing concrete mix the natural resources are being used extensively. Due to large-scale construction being taken up, a steady sand mining is taking place at an alarming rate. To overcome the problem Vermiculite aggregate is partially used as a replacement to sand. Exfoliated Vermiculite (EV) can be effectively utilized in a silica-based material in building industry. In this present study, an attempt has been made to study the mechanical properties of EV cement mortar with different percentages of i.e. 5%, 10%, and 15% of Micro Silica and Ultrafine Fly Ash mineral admixtures as partial replacements of cement, and EV at 20%, 40%, 60%, and 80% by weight as partial replacement of fine aggregate. It has been observed that the required compressive and flexural strength of mortar are achieved when 10% Micro Silica and 5% Ultrafine Fly Ash are used as partial replacement by weight of cement and 20% EV is used as a partial replacement by weight of fine aggregate.

References

[1]. ACI 213 R-03. (2003). Guide for Structural Lightweight- Aggregate Concrete. Retrieved from http://www. uomisan.edu.iq/library/admin/book/68340626265.pdf

[2]. Al-Jabri, K. S., Hago, A. W., Al-Nuaimi, A. S., & Al-Saidy, A. H. (2005). Concrete blocks for thermal insulation in hot climate. Cement and Concrete Research, 35(8), 1472- 1479. https://doi.org/10.1016/j.cemconres.2004.08.018

[3]. Demirboğa, R., & Gül, R. (2003). The effects of expanded perlite aggregate, silica fume and fly ash on the thermal conductivity of lightweight concrete. Cement and Concrete Research, 33(5), 723-727. https://doi.org/ 10.1016/S0008-8846(02)01032-3

[4]. EN 206-1. (2000). Concrete - Part 1: Specification, Performance, Production and Conformity. Retreieved from https://infostore.saiglobal.com/preview/is/en/2002/ i.s.en206-1-2002%2Bna%2Ba2-2010.pdf?sku=580367

[5]. Folorunso, O., Dodds, C., Dimitrakis, G., & Kingman, S. (2012). Continuous energy efficient exfoliation of vermiculite through microwave heating. International Journal of Mineral Processing, 114, 69-79. https://doi.org/ 10.1016/j.minpro.2012.10.003

[6]. IS: 2386. (1963). Methods of Test for Aggregates for Concrete: Part IV Mechanical Properties. Retrieved from http://www.iitk.ac.in/ce/test/IS-codes/is.2386.4.1963.pdf

[7]. Koksal, F., Gencel, O., & Kaya, M. (2015). Combined effect of silica fume and expanded vermiculite on properties of lightweight mortars at ambient and elevated temperatures. Construction and Building Materials, 88, 175-187. https://doi.org/10.1016/j.conbuildmat.2015. 04.021

[8]. Kumar, P., Manojjkumar, P. K., & Pai, S. K. (2015). Experimental study of vermiculite insulated samples with conventional samples in construction industr y. International Journal of Research in Engineering and Technology, 4(2), 615-622.

[9]. Litvan, G. G. (1985, September). Further study of particulate admixture for enhanced freeze-thaw resistance of concrete. In Journal Proceedings 82(5), 724- 730.

[10]. Neville, A. M. (2011). Properties of Concrete (5^thEd.). London: Pearson Education.

[11]. Novokshchenov, V., & Whitcomb, W. (1990). How to obtain high-strength concrete using low-density aggregate. ACI Symposium Publication: High-Strength Concrete, 121, 683-700.

[12]. Reichard, T. W. (1971). Mechanical properties of insulating concrete. ACI Symposium Publication: Lightweight Concrete, 29, 253-316.

[13]. Sancak, E., Sari, Y. D., & Simsek, O. (2008). Effects of elevated temperature on compressive strength and weight loss of the light-weight concrete with silica fume and super plasticizer. Cement and Concrete Composites, 30(8), 715-721. https://doi.org/10.1016/j. cemconcomp.2008.01.004

[14]. Schackow, A., Effting, C., Folgueras, M. V., Güths, S., & Mendes, G. A. (2014). Mechanical and thermal properties of lightweight concretes with vermiculite and EPS using air-entraining agent. Construction and Building Materials, 57, 190-197. https://doi.org/10.1016/j.con buildmat.2014.02.009

[15]. Shideler, J. J. (1957, October). Lightweightaggregate concrete for structural use. In ACI Journal Proceedings, 54(10), 299-328.

[16]. Shoukry, H., Kotkata, M. F., Abo-EL-Enein, S. A., Morsy, M. S., & Shebl, S. S. (2016). Enhanced physical, mechanical and microstructural properties of lightweight vermiculite cement composites modified with nano metakaolin. Construction and Building Materials, 112, 276-283. https://doi.org/10.1016/j.conbuildmat. 2016.02.209

[17]. Silva, L. M., Ribeiro, R. A., Labrincha, J. A., & Ferreira, V. M. (2010). Role of lightweight fillers on the properties of a mixed-binder mortar. Cement and Concrete Composites, 32(1), 19-24. https://doi.org/10.1016/j.cem concomp.2009.07.003

[18]. Walker, G. F. (1961). Vermiculite Minerals. London: Mineralogical Society.

Full Article (HTML)

Pdf

Research Paper

EPR and Optical absorption studies of PbO-CdO-TeO₂-B₂O₃–CuO glasses

S. Vedavyas* , K. Chandra Sekhar, G. Ramadevudu, M. Narasimha Chary, Md. Shareefuddin

* Department of Physics, University College of Science, Osmania University, Hyderabad, Telangana, India.

Department of Physics, University College for Women, Osmania University, Hyderabad, Telangana, India.

* Department of Physics, Vasavi College of Engineering, Hyderabad, Telangana, India.

-* Department of Physics, Osmania University, Hyderabad, Telangana, India.

Vedavyas, S., Sekhar, K. S., Ramadevudu. G, Chary, M. N., and Shareefuddin, M. (2019). EPR and Optical absorption studies of PbO-CdO-TeO₂-B₂O₃–CuO glasses. i-manager’s Journal on Material Science, 7(3), 63-69. https://doi.org/10.26634/jms.7.3.16589

Abstract

The glasses with the composition 20PbO-(10-x)CdO-10TeO₂-60B₂O₃-xCuO (0.5≤x≤2) were prepared by melt quenching technique. X-ray diffractograms revealed the amorphous nature of the glasses. Optical absorption spectra are recorded at room temperature. Optical band gap (E_opt) and Urbach energies were determined. Electron Paramagnetic Resonance (EPR) studies were carried out by introducing Cu²⁺ as the spin probe. EPR spectra of all the glass samples were recorded at X-band (≈9.7 GHz) frequencies. From the EPR spectra spin-Hamiltonian parameters were evaluated. It was observed that (g_║≈ 2.360, g_﬩ ≈ 2.080) g_║ >g_﬩>ge (2.0023) and (A_║≈ 136x10-4cm-1, A_﬩≈30 x10^-4cm^-1) A_║>A_﬩. From these values it is concluded that the ground state of Cu²⁺ is d_x²-y² (²B_1g) and the site symmetry around Cu²⁺ ion was tetragonally distorted in octahedral sites. It was observed that the intensity of the EPR spectra increases with increase of CuO concentration, which shows that more number of Cu²⁺ ions are participating in the resonance. The optical absorption spectra revealed broad absorption band, which is assigned to ²B_1g → ²B_2gtransition. From the EPR and Optical data bonding coefficients were evaluated and discussed.

References

[1]. Ahmed, M.R., & Shareefuddin, M. (2019). EPR, optical, physical and structural studies of strontium alumino- borate glasses containing Cu²⁺ ions. SN Applied Sciences, 1(2019), 209. https://doi.org/10.1007/s42452-019-0201-5

[2]. Bandyopadhyay, A. K. (1981). Optical and ESR investigation of borate glasses containing single and mixed transition metal oxides. Journal of Materials Science, 16(1), 189-203. https://doi.org/10.1007/ BF00552072

[3]. Bleaney, B., Bowers, K. D., & Trenam, R. S. (1955). Paramagnetic resonance in diluted copper salts II. Salts with trigonal symmetry. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 228(1173), 157-166. https://doi.org/10.1098/ rspa.1955.0040

[4]. Chary, M. N. (1995). Electron paramagnetic resonance studies of Cu²⁺ in alkali‐haloborate glasses. Physica Status Solid i (A), 148 (1), K37-K39. https://doi.org/10.1002/pssa.2211480139

[5]. Davis, E. A., & Mott, N. (1970). Conduction in noncrystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors. Philosophical Magazine, 22(179), 0903-0922. https://doi.org/10.1080/14786437008221061

[6]. Dimitrov, V., & Sakka, S. (1996). Electronic oxide polarizability and optical basicity of simple oxides. I. Journal of Applied Physics, 79(3), 1736-1740. https://doi.org/10.1063/1.360962

[7]. Durga, D. K., & Veeraiah, N. (2002). Physical properties of ZnF –As₂O₃ –TeO² glasses doped with Cr ions. Physica B: Condensed Matter, 324(1-4), 127- 141. https://doi.org/10.1016/S0921-4526(02)01286-3

[8]. Gowda, V. V., Reddy, C. N., Radha, K. C., Anavekar, R. V., Etourneau, J., & Rao, K. J. (2007). Structural investigations of sodium diborate glasses containing PbO, Bi₂O₃ and TeO₂ : Elastic property measurements and spectroscopic studies. Journal of Non-Crystalline Solids, 353(11-12), 1150-1163. https://doi.org/10.1016/j. jnoncrysol.2006.12.117

[9]. Kivelson, D., & Neiman, R. (1961). ESR studies on the bonding in copper complexes. The Journal of Chemical Physics, 35(1), 149-155. https://doi.org/10.1063/ 1.1731880

[10]. Krogh-Moe, J. (1962). Structural interpretation of melting point depression in the sodium borate system. Physics and Chemistry of Glasses, 3(4), 101-110.

[11]. Kumar, R. V., Pavani, P. G., Ramesh, B., Shareefuddin, M., & Kumar, K. S. (2013). Structural studies of xLi₂O–(40 − 2 x)Bi₂O₃ –20CdO–40B₂O₃ glasses. Optical Materials, 35(12), 2267-2274. https://doi.org/10.1016/j.optmat. 2013.06.013

[12]. Kumar, V. R., Veeraiah, N., & Rao, B. A. (1997). Optical absorption and photoluminescence properties of Pr₃₊ -doped ZnF₂ -PbO-TeO₂ glasses. Journal of Luminescence, 75(1), 57-62. https://doi.org/10.1016/ S0022-2313(97)89361-1

[13]. Mansour, E. (2012). FTIR spectra of pseudo-binary sodium borate glasses containing TeO₂. Journal of Molecular Structure, 1014, 1-6. https://doi.org/10.1016/ j.molstruc.2012.01.034

[14]. Phani, A. L., Sekhar, K. C., Chakradhar, R. P. S., Chary, M. N., & Shareefuddin, M. (2018). EPR and FTIR spectroscopic studies of MO-Al ₂O₃ -Bi₂O₃ -B₂O₃ -MnO (M= Pb, Zn and Cd) glasses. Materials Research Express, 5(3), 035204. https://doi.org/10.1088/2053-1591/aab64d

[15]. Phani, A.V.P., Hameed, A., Shareefuddin, Md., Chary, M.N., & Ramadevudu, G. (2019). EPR and Spectral Studies of Cu²⁺ ion in (30-x)CdO- xAl₂O₃ -35Bi₂O₃ -34B₂O₃ - 1CuO Glasses, i-manager's Journal on Material Science, 6(4), 67-74. https://doi.org/10.26634/jms.6.4.1 5706

[16]. Rajyasree, C., Teja, P. M. V., Murthy, K. V. R., & Rao, D. K. (2011). Optical and other spectroscopic studies of lead, zinc bismuth borate glasses doped with CuO. Physica B: Condensed Matter, 406(23), 4366-4372. https://doi.org/10.1016/j.physb.2011.08.082

[17]. Sands, R. H. (1955). Paramagnetic resonance absorption in glass. Physical Review, 99(4), 1222-1226. https://doi.org/10.1103/PhysRev.99.1222

[18]. Sekhar, K. C., Hameed, A., Chary, M. N., & Shareefuddin, M. (2016, September). Physical, Optical and Electron paramagnetic resonance studies of PbBr PbO-B₂O₃ glasses containing Cu²⁺ ions. In IOP Conference Series: Materials Science and Engineering (Vol. 149, No. 1, p. 012167). IOP Publishing. https://doi.org/10.1088/ 1757-899X/149/1/012167

[19]. Sekhar, K. C., Hameed, A., Sathe, V. G., Chary, M. N., & Shareefuddin, M. D. (2018). Physical, optical and structural studies of copper-doped lead oxychloro borate glasses. Bulletin of Materials Science, 41(3), 1-7. https://doi.org/10.1007/s12034-018-1604-4

[20]. Sekhar, K.C, Narsimlu, N., Samdani., Ramadevudu, G., Chary, N.M., & Shareefuddin, Md. (2019). Effect of lead bromide on vanadium ions in lead borate glasses for applications in modern optical devices. i-manager's Journal on Material Science, 7(1), 37-43. https://doi. org/10.26634/jms.7.1.15718

[21]. Shareefuddin, M., Jamal, M., & Chary, M. N. (1996). Electron spin resonance and optical absorption spectra of Cu²⁺ ions in xNaI-(30 -x) Na₂O-70B₂O₃ glasses. Journal of Non-crystalline Solids, 201 (1-2), 95-101. https://doi.org/10.1016/0022-3093(95)00627-3

[22]. Tauc, J., Grigorovici, R., & Vancu, A. (1966). Optical properties and electronic structure of amorphous germanium. Physica Status Solidi (B), 15(2), 627-637. https://doi.org/10.1002/pssb.19660150224

[23]. Thulasiramudu, A., & Buddhudu, S. (2006). Optical characterization of Mn²⁺, Ni²⁺ and Co²⁺ ions doped zinc lead borate glasses. Journal of Quantitative Spectroscopy and Radiative Transfer, 102(2), 212-227. https://doi.org/10.1016/j.jqsrt.2006.02.006

[24]. Urbach, F. (1953). The long-wavelength edge of photographic sensitivity and of the electronic absorption of solids. Physical Review, 92 (5), 1324. https://doi.org/10.1103/PhysRev.92.1324

i-manager's Journal on Material Science (JMS)

Current Issue Vol. 11 Issue 3

Most Read

Most Cited

Volume 7 Issue 3 October - December 2019

Durga Verma* , R. P. Patel**

* Department of Applied Physics, Faculty of Engineering and Technology, Shri Shankaracharya Group of Institutions, Chattisgarh, India. ** Department of Physics, Kalinga University, Atal Nagar, Raipur, Chattisgarh, India.

Verma, D., and Patel, R. P. (2019). Preparation of Sr2SiO4:Dy3+ Phosphors by Solid-State Reaction Method and their Thermoluminescence Properties. i-manager’s Journal on Material Science, 7(3), 1-7. https://doi.org/10.26634/jms.7.3.15398

Abstract

References

Full Article (HTML)

Pdf

U. Naresh* , R. Jeevan Kumar**

*_** Department of Physics, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, India.

Naresh, U., and Kumar, R. J. (2019). Structural, Optical, Magnetic Properties of CuFe2O4, BaFe2O4 Nano-Particle Synthesized via Hydrothermal Synthesis. i-manager’s Journal on Material Science, 7(3), 8-15. https://doi.org/10.26634/jms.7.3.15753

Abstract

References

Full Article (HTML)

Pdf

Upma* , Mohan L. Verma**

*_** Department of Applied Physics, Shri Shankaracharya Group of Institutions (Shri Shankaracharya Technical Campus), Bhilai, Chhattisgarh, India.

Upma and Verma, M. L. (2019). Structures and Properties of Biopolymer Chitosan - A First Principle Study. i-manager’s Journal on Material Science, 7(3), 16-30. https://doi.org/10.26634/jms.7.3.15642

Abstract

References

Full Article (HTML)

Pdf

Mohamad Raheem Ahmed* , Ramdevudu Gokarakonda**, Abdul Hameed***, M. Narasimha Chary****, MD Shareefuddin*****

Ahmed, M. R., Gokarakonda, R., Hameed, A., Chary, M. N., and Shareefuddin, M. (2019). Physical and Structural Properties Conformed the Role of Al2O3 in Barium Alumino Borate Glasses Doped with Cr3+ ions. i-manager’s Journal on Material Science, 7(3), 31-36. https://doi.org/10.26634/jms.7.3.16373

Abstract

References

Full Article (HTML)

Pdf

Sharma Jitesh Chandrapal* , K. Suresh**, Y. H. Gandhi***, K. V. R. Murthy****

Chandrapal, S. J., Suresh, K., Gandhi, Y. H., and Murthy, K. V. R. (2019). Synthesis and Photoluminescence Studies of Rare Earth Doped [1.5%] CaO. i-manager’s Journal on Material Science, 7(3), 37-42. https://doi.org/10.26634/jms.7.3.16374

Abstract

References

Full Article (HTML)

Pdf

Gajanan N. Thokal* , Chandrakant R. Patil**

*-** Department of Mechanical Engineering, Professor Ram Meghe Institute of Technology and Research, Maharashtra, India.

Thokal, G.N., and Patil, C. R. (2019). Performance of Synthetic and Natural Polymer Blends using 3D Printing. i-manager’s Journal on Material Science, 7(3), 43-52. https://doi.org/10.26634/jms.7.3.15595

Abstract

References

Full Article (HTML)

Pdf

M. V. S. S. Sastri* , P. Ashveen Kumar**, K. Jagannadha Rao***

Sastri M. V. S. S., Kumar, D. A., and Rao, K. J. (2019). Experimental Investigation on Strength Properties of Ultrafine Fly Ash and Micro Silica as Mineral Admixtures for Vermiculate Mortar. i-manager’s Journal on Material Science, 7(3), 53-62. https://doi.org/10.26634/jms.7.3.16588

Abstract

References

Full Article (HTML)

Pdf

S. Vedavyas* , K. Chandra Sekhar**, G. Ramadevudu***, M. Narasimha Chary****, Md. Shareefuddin*****

Vedavyas, S., Sekhar, K. S., Ramadevudu. G, Chary, M. N., and Shareefuddin, M. (2019). EPR and Optical absorption studies of PbO-CdO-TeO2-B2O3–CuO glasses. i-manager’s Journal on Material Science, 7(3), 63-69. https://doi.org/10.26634/jms.7.3.16589

Abstract

References

Full Article (HTML)

Pdf

* Department of Applied Physics, Faculty of Engineering and Technology, Shri Shankaracharya Group of Institutions, Chattisgarh, India.

** Department of Physics, Kalinga University, Atal Nagar, Raipur, Chattisgarh, India.

Verma, D., and Patel, R. P. (2019). Preparation of Sr₂SiO₄:Dy³⁺ Phosphors by Solid-State Reaction Method and their Thermoluminescence Properties. i-manager’s Journal on Material Science, 7(3), 1-7. https://doi.org/10.26634/jms.7.3.15398

Naresh, U., and Kumar, R. J. (2019). Structural, Optical, Magnetic Properties of CuFe₂O₄, BaFe₂O₄Nano-Particle Synthesized via Hydrothermal Synthesis. i-manager’s Journal on Material Science, 7(3), 8-15. https://doi.org/10.26634/jms.7.3.15753

Mohamad Raheem Ahmed* , Ramdevudu Gokarakonda, Abdul Hameed, M. Narasimha Chary, MD Shareefuddin

Sharma Jitesh Chandrapal* , K. Suresh, Y. H. Gandhi*, K. V. R. Murthy****

M. V. S. S. Sastri* , P. Ashveen Kumar, K. Jagannadha Rao*

S. Vedavyas* , K. Chandra Sekhar, G. Ramadevudu, M. Narasimha Chary, Md. Shareefuddin

Vedavyas, S., Sekhar, K. S., Ramadevudu. G, Chary, M. N., and Shareefuddin, M. (2019). EPR and Optical absorption studies of PbO-CdO-TeO₂-B₂O₃–CuO glasses. i-manager’s Journal on Material Science, 7(3), 63-69. https://doi.org/10.26634/jms.7.3.16589