Simultaneous measurements of thermal conductivity and diffusivity of Se80Te20-xInx (x = 2, 4, 6 and 10) chalcogenide glasses at room temperature |
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Authors: | N S Saxena Mousa M A Imran Kedar Singh |
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Affiliation: | (1) Department of Physics, University of Rajasthan, 302 004 Jaipur, India |
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Abstract: | Measurements of thermal conductivity and thermal diffusivity of twin pellets of Se80Te20-xInx (x = 2, 4, 6 and 10) glasses, prepared under a load of 5 tons were carried out at room temperature using transient plane source
(TPS) technique. The measured values of both thermal conductivity and diffusivity were used to determine the specific heat
per unit volume of the said materials in the composition range of investigation. Results indicated that both the values of
thermal conductivity and thermal diffusivity increased with the addition of indium at the cost of tellurium whereas the specific
heat remained almost constant. This compositional dependence behaviour of the thermal conductivity and diffusivity has been
explained in terms of the iono-covalent type of bond which In makes with Se as it is incorporated in the Se-Te glass. |
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Keywords: | Chalcogenide glasses thermal conductivity specific heat iono-covalent bond |
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