Estimation of thermal conductivity coefficient for solid-state crystal dielectrics at high temperatures

A generalized expression for approximate estimation of lattice component of thermal conductivity coefficient for solid-state crystal dielectrics at temperatures higher than the Debye temperature, is obtained, which is convenient for preliminary estimation of thermal conductivity coefficient and enab...

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Bibliographic Details
Published inJournal of contemporary physics Vol. 49; no. 4; pp. 176 - 179
Main Authors Yeganyan, A. V., Kuzanyan, A. S., Stathopoulos, V.
Format Journal Article
LanguageEnglish
Published Heidelberg Allerton Press 01.07.2014
Subjects
Particle and Nuclear Physics
Physics
Physics and Astronomy
dielectrics
thermal conductivity
high temperatures
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Summary:A generalized expression for approximate estimation of lattice component of thermal conductivity coefficient for solid-state crystal dielectrics at temperatures higher than the Debye temperature, is obtained, which is convenient for preliminary estimation of thermal conductivity coefficient and enables one to conduct a goal-directed search for low-conductivity materials. On the example of rare-earth magnesium hexaaluminates, it is shown that estimations according to the obtained expression are in good compliance with experimental data.
ISSN:1068-3372
1934-9378
DOI:10.3103/S1068337214040070