Abstract
New multi-component glassy materials with composition of Se78−x Te20Sn2Bi x (0 ≤ x ≤ 6) have been synthesized by well-known melt quenching technique. The as-prepared glasses have been characterized by applying an advanced transient plane source technique to study their thermal transport properties (effective thermal conductivity, diffusivity, specific heat per unit volume) at room temperature. Density measurements have been done to correlate the obtained results. Using the experimental data of density measurements, the basic physical parameters, such as mean atomic volume, compactness, average coordination number etc., are evaluated for the synthesized glasses and the results are discussed as a function of glass composition. We have also determined the phonon mean free path (τ) using the experimental value of effective thermal diffusivity. The composition dependence of the thermal transport properties of aforesaid glassy system has also been discussed.
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Acknowledgements
One of us, NM is thankful to the Department of Science and Technology (DST), New Delhi, India for providing financial assistance under Fast Track Young Scientists Scheme [Scheme No. SR/FTP/PS-054/2010]. A Sharma is thankful to Council of Scientific and Industrial Research (CSIR), New Delhi, India for providing financial support as SRF. We are also thankful to UGC, New Delhi, India for providing equipment grant to purchase TPS unit under UGC networking program.
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Sharma, A., Mehta, N. Composition dependence of some thermo-physical properties of multi-component Se78−x Te20Sn2Bi x (0 ≤ x ≤ 6) chalcogenide glasses. J Mater Sci 50, 210–218 (2015). https://doi.org/10.1007/s10853-014-8580-x
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DOI: https://doi.org/10.1007/s10853-014-8580-x