Thermal conductivity of argon–SiO2 cryocrystal nanocomposite

Автор(и)

  • R.V. Nikonkov Institute for Low Temperature and Structure Research, Polish Academy of Sciences, PN 1410, 50-950 Wroclaw, Poland
  • P. Stachowiak Institute for Low Temperature and Structure Research, Polish Academy of Sciences, PN 1410, 50-950 Wroclaw, Poland
  • A. Jeżowski Institute for Low Temperature and Structure Research, Polish Academy of Sciences, PN 1410, 50-950 Wroclaw, Poland
  • A.I. Krivchikov B. Verkin Institute for Low Temperature Physics and Engineering of NAS Ukraine 47 Prospekt Nauky, Kharkiv 61103, Ukraine

DOI:

https://doi.org/10.1063/1.4947308%20

Ключові слова:

thermal conductivity, cryocrystals, nanocomposites, phonon-phonon processes, dislocation scattering.

Анотація

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.

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Опубліковано

2016-02-18

Як цитувати

(1)
Nikonkov, R.; Stachowiak, P.; Jeżowski, A.; Krivchikov, A. Thermal Conductivity of argon–SiO2 Cryocrystal Nanocomposite. Fiz. Nizk. Temp. 2016, 42, 403-406.

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Розділ

Електронні властивості провідних систем

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