Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀
The low temperature (2-24 K) thermal expansion of pure (single-crystal and polycrystalline) C₆₀ and polycrystalline C₆₀ intercalated with He, Ne, Ar, and Kr has been investigated using the high-resolution capacitance dilatometer. The investigation of the time dependence of the sample length variatio...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
| Автори: | , , , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128827 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ / A.N. Aleksandrovskii, A.S. Bakai, A.V. Dolbin, V.B. Esel`son, G.E. Gadd, V.G. Gavrilko, V.G. Manzhelii, S. Moricca, B. Sundqvist, B.G. Udovidchenko // Физика низких температур. — 2003. — Т. 29, № 4. — С. 432-442. — Бібліогр.: 35 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862663399624671232 |
|---|---|
| author | Aleksandrovskii, A.N. Bakai, A.S. Dolbin, A.V. Esel`son, V.B. Gadd, G.E. Gavrilko, V.G. Manzhelii, V.G. Moricca, S. Sundqvist, B. Udovidchenko, B.G. |
| author_facet | Aleksandrovskii, A.N. Bakai, A.S. Dolbin, A.V. Esel`son, V.B. Gadd, G.E. Gavrilko, V.G. Manzhelii, V.G. Moricca, S. Sundqvist, B. Udovidchenko, B.G. |
| citation_txt | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ / A.N. Aleksandrovskii, A.S. Bakai, A.V. Dolbin, V.B. Esel`son, G.E. Gadd, V.G. Gavrilko, V.G. Manzhelii, S. Moricca, B. Sundqvist, B.G. Udovidchenko // Физика низких температур. — 2003. — Т. 29, № 4. — С. 432-442. — Бібліогр.: 35 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The low temperature (2-24 K) thermal expansion of pure (single-crystal and polycrystalline) C₆₀ and polycrystalline C₆₀ intercalated with He, Ne, Ar, and Kr has been investigated using the high-resolution capacitance dilatometer. The investigation of the time dependence of the sample length variations ΔL(t) on heating by ΔT shows that the thermal expansion is determined by the sum of positive and negative contributions, which have different relaxation times. The negative thermal expansion usually prevails at helium temperatures. The positive expansion is connected with the phonon thermalization of the system. The negative expansion is caused by reorientation of the C₆₀ molecules. It is assumed that the reorientation is of a quantum character. The inert gas impurities affect the reorientation of the C₆₀ molecules very strongly, especially at liquid helium temperatures. A temperature hysteresis of the thermal expansion coefficient of Kr- and He-C₆₀ solutions has been revealed. The hysteresis is attributed to orientational polyamorphous transformation in these systems.
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| first_indexed | 2025-12-02T14:17:05Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128827 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-02T14:17:05Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Aleksandrovskii, A.N. Bakai, A.S. Dolbin, A.V. Esel`son, V.B. Gadd, G.E. Gavrilko, V.G. Manzhelii, V.G. Moricca, S. Sundqvist, B. Udovidchenko, B.G. 2018-01-14T09:31:48Z 2018-01-14T09:31:48Z 2003 Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ / A.N. Aleksandrovskii, A.S. Bakai, A.V. Dolbin, V.B. Esel`son, G.E. Gadd, V.G. Gavrilko, V.G. Manzhelii, S. Moricca, B. Sundqvist, B.G. Udovidchenko // Физика низких температур. — 2003. — Т. 29, № 4. — С. 432-442. — Бібліогр.: 35 назв. — англ. 0132-6414 PACS: 74.70.Wz https://nasplib.isofts.kiev.ua/handle/123456789/128827 The low temperature (2-24 K) thermal expansion of pure (single-crystal and polycrystalline) C₆₀ and polycrystalline C₆₀ intercalated with He, Ne, Ar, and Kr has been investigated using the high-resolution capacitance dilatometer. The investigation of the time dependence of the sample length variations ΔL(t) on heating by ΔT shows that the thermal expansion is determined by the sum of positive and negative contributions, which have different relaxation times. The negative thermal expansion usually prevails at helium temperatures. The positive expansion is connected with the phonon thermalization of the system. The negative expansion is caused by reorientation of the C₆₀ molecules. It is assumed that the reorientation is of a quantum character. The inert gas impurities affect the reorientation of the C₆₀ molecules very strongly, especially at liquid helium temperatures. A temperature hysteresis of the thermal expansion coefficient of Kr- and He-C₆₀ solutions has been revealed. The hysteresis is attributed to orientational polyamorphous transformation in these systems. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Динамика кристаллической решетки Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ Article published earlier |
| spellingShingle | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ Aleksandrovskii, A.N. Bakai, A.S. Dolbin, A.V. Esel`son, V.B. Gadd, G.E. Gavrilko, V.G. Manzhelii, V.G. Moricca, S. Sundqvist, B. Udovidchenko, B.G. Динамика кристаллической решетки |
| title | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ |
| title_full | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ |
| title_fullStr | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ |
| title_full_unstemmed | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ |
| title_short | Low-temperature thermal expansion of pure and inert gas-doped fullerite C₆₀ |
| title_sort | low-temperature thermal expansion of pure and inert gas-doped fullerite c₆₀ |
| topic | Динамика кристаллической решетки |
| topic_facet | Динамика кристаллической решетки |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128827 |
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