Search for the minimum thermal   conductivity in mixed cryocrystals (CH₄)₁₋ξ Krξ

Search for the minimum thermal conductivity in mixed cryocrystals (CH₄)₁₋ξ Krξ

Konstantinov, V.A. ; Manzhelii, V.G. ; Revyakin, V.P. ; Pohl, R.O.

Тема: Статьи, посвященные столетию со дня рождения Л. В. Шубникова

Інший ID: PACS: 66.70.+f, 63.20.Ls, 63.20.Hp

URI: http://dspace.nbuv.gov.ua/handle/123456789/129269

Посилання: Search for the minimum thermal conductivity in mixed cryocrystals (CH₄)₁₋ξ Krξ / V.A. Konstantinov , V.G. Manzhelii, V.P. Revyakin, R.O. Pohl // Физика низких температур. — 2001. — Т. 27, № 9-10. — С. 1159-1169. — Бібліогр.: 30 назв. — англ.

Дата: 2001

Завантажень: 347

Search for the minimum thermal conductivity in mixed cryocrystals (CH₄)₁₋ξ Krξ

Анотація:

The isochoric thermal conductivity of (CH4)1-ξ Krξ solid solutions is studied between 40 K and ~ 150 K over the wide range of concentrations (ξ = 0.013, 0.032, 0.07, 0.115, 0.34, 0.71, 0.855, 0.937, and 0.97). A gradual transition from the thermal conductivity of a highly perfect crystal to the minimum thermal conductivity is observed as the crystal becomes increasingly more disordered. A qualitative description is given in the framework of Debye model of thermal conductivity, which takes into consideration the fact that phonon mean free path cannot decrease indefinitely.

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