Negative thermal expansion of fullerite C₆₀ at liquid helium temperatures

Negative thermal expansion of fullerite C₆₀ at liquid helium temperatures

Aleksandrovskii, A.N. ; Esel`son, V.B. ; Manzhelii, V.G. ; Soldatov, A.V. ; Sundqvist, B.

Тема: Письма pедактоpу

URI: http://dspace.nbuv.gov.ua/handle/123456789/176338

Посилання: Negative thermal expansion of fullerite C₆₀ at liquid helium temperatures / A.N. Aleksandrovskii, V.B. Esel`son, V.G. Manzhelii, A.V. Soldatov, B. Sundqvist // Физика низких температур. — 1997. — Т. 23, № 11. — С. 1256-1260. — Бібліогр.: 26 назв. — англ.

Дата: 1997

Завантажень: 324

Negative thermal expansion of fullerite C₆₀ at liquid helium temperatures

Анотація:

The thermal expansion of fullerite C₆₀ has been measured in the temperature range 2-9 К A compacted fullerite sample with a diameter of about 6 mm and height of 2.4 mm was used. It was found that at temperatures below - 3.4 К the linear thermal expansion coefficient becomes negath re. At temperatures above 5 К our results are in good agreement with the available literature data. A qualitative explanation of the results is proposed.

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