Composition dependent structural and thermal properties of sm2o3doped zinc fluoroborate glasses

Wagh, Akshatha and Ajithkumar, M P and Kamath, Sudha D (2014) Composition dependent structural and thermal properties of sm2o3doped zinc fluoroborate glasses. Energy Research Journal, 4 (2). pp. 52-58. ISSN 1949-0151

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Abstract

Glasses based on Sm3+ doped zinc fluoroborate have been synthesized and characterized. Formation of glass has been investigated in the 30 ZnF2-20 TeO2-(50-x) B2O3-x Sm2O3 matrix. Fast quenching is required to prevent melt crystallization and adequate heat treatment to diminish thermal stress, which results in an efficient amorphous material. The Differential Scanning Calorimeter (DSC), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDAX), stability, density and refractive index have been recorded, calculated, measured and analyzed for the glass samples with different concentrations of Sm3+ ranging between 0 to 3 mol%. Density increases as dopant concentration increases and glass transition temperature Tg ranges between 395 and 420°C. The increase of mola r volume with Sm2O3 content indicates that the extension of glass network is due to the increase of the number of NBOs. The results found in this investigation showed that the refractive index of glass does not only depend on the density but also depends on the electronic polarizability of the glass. The increasing stability of the glass samples shows that they are thermally resistant. The presence of NBOs in the glass network is also approved by the decrease in glass transition temperature (Tg). The variation of the properties with different composition of dopant plays a dominant role in determining a good host material in the field of optics and photonics

Item Type: Article
Uncontrolled Keywords: Hruby’s Parameter, DSC, Zinc Fluoroborate, Samarium Doped
Subjects: Engineering > MIT Manipal > Chemistry
Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 05 Jun 2015 09:23
Last Modified: 05 Jun 2015 09:23
URI: http://eprints.manipal.edu/id/eprint/142895

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