Thermal conductivity of argon–SiO₂ cryocrystal nanocomposite

The effective thermal conductivity of samples of cryocrystal nanocomposite obtained from argon and SiO2
 nanopowder was determined in the temperature interval 2–35 K using the steady-state method. The thermal conductivity
 of crystalline argon with nanoparticles of amorphous silica o...

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Published in:Физика низких температур
Date:2016
Main Authors: Nikonkov, R.V., Stachowiak, P., Jeżowski, A., Krivchikov, A.I.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2016
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Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/128508
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Thermal conductivity of argon–SiO₂ cryocrystal nanocomposite / R.V. Nikonkov, P. Stachowiak, A. Jeżowski, and A.I. Krivchikov // Физика низких температур. — 2016. — Т. 42, № 4. — С. 403–406 . — Бібліогр.: 31 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:The effective thermal conductivity of samples of cryocrystal nanocomposite obtained from argon and SiO2
 nanopowder was determined in the temperature interval 2–35 K using the steady-state method. The thermal conductivity
 of crystalline argon with nanoparticles of amorphous silica oxide embedded in its structure shows a weak dependence
 on particle linear dimension in the interval 5–42 nm. The temperature dependence of the thermal conductivity
 of the nanocomposites can be well approximated by taking into account only the two mechanisms of heat
 carrier scattering: phonon-phonon interaction in U-processes and scattering of phonons by dislocations.
ISSN:0132-6414