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Phonon thermal conductivity of thin crystalline films

Fononska toplotna provodnost tankih kristalnih filmova

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2011
371.pdf (241.3Kb)
Authors
Jaćimovski, Stevo
Šetrajčić, Jovan P.
Zorić, Vojkan M.
Raković, Dejan
Article (Published version)
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Abstract
In this paper we have analyzed phonon thermal conductivity of thin crystalline films, i.e. of low-dimensional structures with dimensional parameters significantly decreased in only one direction. Finding of coefficient of thermal conductivity is achieved by deriving phonon coefficient of diffusion, phonon specific heat and specific density for explored structure. Coefficient of diffusion is derived by applying method of Green functions, using Kubo formula. Then reduced thermal conductivities for film and bulk structures were compared for wider temperature interval. In the last section an influence of changes of heat conductivity on the boundaries is analyzed.
U radu je analizirana fononska toplotna provodnost u kristalnim filmovima, tj. niskodimenzionim strukturama kod kojih su dimenzioni parametri značajno smanjeni samo u jednom pravcu. Određivanje koeficijenta toplotne provodnosti je vršeno određivanjem koeficijenta difuzije fonona, fononske specifične toplote i masene gustine za datu strukturu. Koeficijent difuzije je naen metodom Grinovih funkcija, korišćenjem Kubo formule. Izvršena su poređenja redukovanih toplotnih provodnosti filma i neprekidnih (balk) struktura za širi temperaturski interval. U poslednjem delu je analiziran uticaj promena na granicama na toplotnu provodnost.
Keywords:
phonons / coefficient of thermal conductivity / specific heat / fononi / koeficijent toplotne provodnosti / specifična toplota
Source:
Tehnika, 2011, 66, 4, 533-538
Publisher:
  • Savez inženjera i tehničara Srbije, Beograd
Funding / projects:
  • Design and modeling of specific features of nanostructured samples (RS-171039)

ISSN: 0040-2176

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URI
http://jakov.kpu.edu.rs/handle/123456789/373
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Jakov
TY  - JOUR
AU  - Jaćimovski, Stevo
AU  - Šetrajčić, Jovan P.
AU  - Zorić, Vojkan M.
AU  - Raković, Dejan
PY  - 2011
UR  - http://jakov.kpu.edu.rs/handle/123456789/373
AB  - In this paper we have analyzed phonon thermal conductivity of thin crystalline films, i.e. of low-dimensional structures with dimensional parameters significantly decreased in only one direction. Finding of coefficient of thermal conductivity is achieved by deriving phonon coefficient of diffusion, phonon specific heat and specific density for explored structure. Coefficient of diffusion is derived by applying method of Green functions, using Kubo formula. Then reduced thermal conductivities for film and bulk structures were compared for wider temperature interval. In the last section an influence of changes of heat conductivity on the boundaries is analyzed.
AB  - U radu je analizirana fononska toplotna provodnost u kristalnim filmovima, tj. niskodimenzionim strukturama kod kojih su dimenzioni parametri značajno smanjeni samo u jednom pravcu. Određivanje koeficijenta toplotne provodnosti je vršeno određivanjem koeficijenta difuzije fonona, fononske specifične toplote i masene gustine za datu strukturu. Koeficijent difuzije je naen metodom Grinovih funkcija, korišćenjem Kubo formule. Izvršena su poređenja redukovanih toplotnih provodnosti filma i neprekidnih (balk) struktura za širi temperaturski interval. U poslednjem delu je analiziran uticaj promena na granicama na toplotnu provodnost.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Phonon thermal conductivity of thin crystalline films
T1  - Fononska toplotna provodnost tankih kristalnih filmova
VL  - 66
IS  - 4
SP  - 533
EP  - 538
UR  - conv_129
ER  - 
@article{
author = "Jaćimovski, Stevo and Šetrajčić, Jovan P. and Zorić, Vojkan M. and Raković, Dejan",
year = "2011",
abstract = "In this paper we have analyzed phonon thermal conductivity of thin crystalline films, i.e. of low-dimensional structures with dimensional parameters significantly decreased in only one direction. Finding of coefficient of thermal conductivity is achieved by deriving phonon coefficient of diffusion, phonon specific heat and specific density for explored structure. Coefficient of diffusion is derived by applying method of Green functions, using Kubo formula. Then reduced thermal conductivities for film and bulk structures were compared for wider temperature interval. In the last section an influence of changes of heat conductivity on the boundaries is analyzed., U radu je analizirana fononska toplotna provodnost u kristalnim filmovima, tj. niskodimenzionim strukturama kod kojih su dimenzioni parametri značajno smanjeni samo u jednom pravcu. Određivanje koeficijenta toplotne provodnosti je vršeno određivanjem koeficijenta difuzije fonona, fononske specifične toplote i masene gustine za datu strukturu. Koeficijent difuzije je naen metodom Grinovih funkcija, korišćenjem Kubo formule. Izvršena su poređenja redukovanih toplotnih provodnosti filma i neprekidnih (balk) struktura za širi temperaturski interval. U poslednjem delu je analiziran uticaj promena na granicama na toplotnu provodnost.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Phonon thermal conductivity of thin crystalline films, Fononska toplotna provodnost tankih kristalnih filmova",
volume = "66",
number = "4",
pages = "533-538",
url = "conv_129"
}
Jaćimovski, S., Šetrajčić, J. P., Zorić, V. M.,& Raković, D.. (2011). Phonon thermal conductivity of thin crystalline films. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 66(4), 533-538.
conv_129
Jaćimovski S, Šetrajčić JP, Zorić VM, Raković D. Phonon thermal conductivity of thin crystalline films. in Tehnika. 2011;66(4):533-538.
conv_129 .
Jaćimovski, Stevo, Šetrajčić, Jovan P., Zorić, Vojkan M., Raković, Dejan, "Phonon thermal conductivity of thin crystalline films" in Tehnika, 66, no. 4 (2011):533-538,
conv_129 .

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