Characterization and structural studies of vanadium doped lithium-barium-phosphate glasses

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Lakshmikantha, R. and Rajaramakrishna, R. and Anavekar, R.V. and Ayachit, N.H. (2012) Characterization and structural studies of vanadium doped lithium-barium-phosphate glasses. Canadian journal of physics, 90 (3). pp. 235-239. ISSN 00084204

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Canadian Journal of Physics Volume 90 issue 3 2012 [doi 10.1139%2Fp2012-011] Lakshmikantha, R.; Rajaramakrishna, R.; Anavekar, R.V.; Ayachit, -- Characterization and structural studies of vanadium dop.pdf
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Official URL: https://doi.org/10.1139/p2012-011

Abstract

Characterization and structural studies of (P 2O 5) 49.5(V 2O 5) 0.5(BaO) x(Li 2O) 50-x (where x = 0, 5, 10, 15, 20, 25 mol) glasses are reported. These glasses were prepared using the conventional melt quenching technique. X-ray diffraction and differential scanning calorimetry measurements were performed to confirm their amorphous nature. Infrared spectra of these glasses show absorption peaks in the ranges 1273-1267; 1098-1088; 1008-1018; 899-889; and 795-760 and 506-474 cm -1 corresponding to P=O, P-O -, (P-O-P) S, (P-O-P) AS, and O-P-O group vibrations, respectively. Thermal stability factor (s) has been evaluated using the values of T g and T c. These glasses exhibit high transition temperature (T g) and high thermal stability factor (s) indicating that they are thermally stable. Refractive index of the glasses lies in the range 1.59-1.49. Electron paramagnetic resonance spectroscopy of V 4+ show characteristic hyperfine split signal arising from the vanadyl group in this glass matrix. The results are discussed by considering the structural modification of the phosphate network. © 2012 Published by NRC Research Press.

Item Type: Article
Additional Information: cited By 1
Uncontrolled Keywords: Absorption peaks; Electron paramagnetic resonance spectroscopy; Glass matrices; High thermal stability; Hyperfines; Infrared spectrum; Melt quenching techniques; Structural modifications; Structural studies; Thermally stable; Vanadyl, Barium; Differential scanning calorimetry; Electron spin resonance spectroscopy; Lithium; Paramagnetism; Refractive index; Spectroscopy; Thermodynamic stability; Vanadium; Vanadium compounds; X ray diffraction, Glass
Subjects: Faculty of Science > Pure Sciences > Physics
Divisions: Jnana Bharathi / Central College Campus > Department of Physics
Depositing User: Mr. Kirana Kumar D
Date Deposited: 04 Apr 2016 10:31
Last Modified: 04 Apr 2016 10:31
URI: http://eprints-bangaloreuniversity.in/id/eprint/2772

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