Phonon Contribution in Thermodynamics and Transport Properties of Ultrathin Ceramic Films
S.K. Jaćimovskia, J.P. Šetrajčić b, M.S. Jaćimovski c and V.V. Stojanović d
aAcademy of Criminology and Police Studies, Zemun, Cara Dušana 196, Belgrade, Serbia
bUniversity of Novi Sad, Faculty of Sciences, Department of Physics, Novi Sad, Trg Dositeja Obradovića 4, Vojvodina, Serbia
cUniversity of Novi Sad, Faculty of Engineering, Novi Sad, Trg Dositeja Obradovića 6, Serbia
dHigh Chemical Medical School, Vršac, Sterijina 113, Serbia
Received: March 26, 2014
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The dispersion law, density states of phonons, thermodynamics properties and thermal conduc-tivity was analyzed in this paper. It has been shown that at low temperatures, thermal conductivity of thin film is considerably lower that of bulk-structure. It turned out that phonons in thin film require activation energy for exciting. This leads to extremely low specific heat and specific conductivity at low temperatures. Consequences of quoted facts were discussed in detail and their influence on kinetic and thermodynamic properties of thin films is estimated.

DOI: 10.12693/APhysPolA.126.811
PACS numbers: 73.50.-h, 73.61.-r, 74.25.fc, 66.30.Xj, 65.40.-b