Contemporary Materials III−1 (2012)
Contemporary Materials, III−1 (2012) Page 81 of 85
UDK 57.068.15
HEAT CONDUCTIVITY OF SOME LAYERED STRUCTURES
S. K. Jaćimovski1,*, D. I. Raković2, I. J. Šetrajčić3, S. Armaković3, V. D. Sajfert4
1 The Academy of Criminalistic and Police Studies, Zemun – Belgrade, Serbia
2 Faculty of Electrical Engineering, Belgrade, Serbia
3 University of Novi Sad, Faculty of Sciences, Department of Physics, Vojvodina – Serbia
4 University of Novi Sad, Technical Faculty „Mihajlo Pupin“, Zrenjanin, Vojvodina – Serbia
Abstract
Callaway model with Debye’s approximation of phonon states density is used to determine heat conductivity of some layered structures of Nb1-x Snx Se2 type. In total relaxation time, a term proportional to squared frequency, typical for layered structures, is kept. Electronic heat conductivity is determined by Wiedemann–Franz law and BRT model for superconductors. In both cases, heat conductivity is determined numerically in the range of 2 – 200 K. Results correlate well with experimental data.
Keywords: phonons, Callaway model, Debye’s approximation, heat conductivity.
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References
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