Thermophysical Properties of Polycrystalline n-CdSnAs2 in a Temperature Range of 300–800 K

The paper presents the results of a study of the temperature dependences of the specific heat c p , thermal diffusivity α, and thermal conductivity λ of polycrystalline CdSnAs 2 with n -type conductivity. The possible mechanisms of thermal conductivity in the studied temperature range are analyzed....

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Bibliographic Details
Published in:High temperature 2021, Vol.59 (1), p.46-48
Main Authors: Ismailov, Sh. M., Orakova, S. M., Isaev, Z. A., Yakh’yaeva, Kh. Sh
Format: Article
Language:English
Subjects:
Atoms and Molecules in Strong Fields
Classical and Continuum Physics
Heat conductivity
Heat transfer
Industrial Chemistry/Chemical Engineering
Laser Matter Interaction
Materials Science
Phonons
Physical Chemistry
Physics
Physics and Astronomy
Polycrystals
Thermal conductivity
Thermal diffusivity
Thermophysical properties
Thermophysical Properties of Materials
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Summary:The paper presents the results of a study of the temperature dependences of the specific heat c p , thermal diffusivity α, and thermal conductivity λ of polycrystalline CdSnAs 2 with n -type conductivity. The possible mechanisms of thermal conductivity in the studied temperature range are analyzed. It is shown that the main mechanisms of heat transfer for polycrystalline n -CdSnAs 2 are electronic, bipolar, and phonon. It is found that the phonon component of thermal conductivity, which is calculated as the difference between the total thermal conductivity and the electronic and bipolar components of thermal conductivity, decreases with temperature faster than according to the law λ p ~ T –1 .
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X21010053