Abstract
Measurements of thermal conductivity and thermal diffusivity of twin pellets of Se90−x Te5Sn5In x (x = 0, 3, 6, and 9) chalcogenide glasses were carried out at room temperature using transient plane source technique. The measured values of thermal conductivity and thermal diffusivity were used to determine the specific heat per unit volume of these glasses in the composition range of investigation. Results indicated that both values of thermal conductivity and thermal diffusivity were increased with addition of indium concentration at the cost of selenium, whereas the specific heat per unit volume was slightly decreases with increase of indium content. This compositional dependence behavior of the thermal conductivity and diffusivity can be explained in terms of the iono-covalent type of bonds, which In (indium) makes with Se as it is incorporated in the Se–Te–Sn glass.
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Acknowledgements
The authors are thankful to University Grant Commission, New Delhi for provide financial assistance for thermal constant analyzer under UGC Networking Scheme. The authors also wish to thank CSIR, New Delhi, for providing financial assistance under the project grant CSIR Proj. 01(2456)/11/AMR-II.
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Kumar, S., Singh, K. Simultaneous measurements of thermal conductivity and thermal diffusivity of Se90−x Te5Sn5In x (x = 0, 3, 6, and 9) multi-component chalcogenide glasses. J Mater Sci 47, 3949–3952 (2012). https://doi.org/10.1007/s10853-011-6244-7
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DOI: https://doi.org/10.1007/s10853-011-6244-7