On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀
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| Creator |
Khalack, J.M.
Loktev, V.M. |
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| Subject |
Динамика кристаллической решетки
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| Description |
A simple planar model for an orientational ordering of threefold molecules on a triangular lattice modeling a close-packed (111) plane of fullerite is considered. The system has 3-sublattice ordered ground state which includes 3 different molecular orientations. There exist 6 kinds of orientational domains, which are related with a permutation or a mirror symmetry. Interdomain walls are found to be rather narrow. The model molecules have two-well orientational potential profiles, which are slightly effected by a presence of a straight domain wall. The reason is a stronger correlation between neighbor molecules in the triangular lattice versus the square lattice previously considered. A considerable reduction (up to one order) of the orientational interwell potential barrier is found in the core regions of essentially two-dimentional potential defects, such as a three-domain boundary or a kink in the domain wall. For ultimately uncorrelated nearest neighbors the height of the interwell barrier can be reduced even by a factor of 10².
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| Date |
2018-01-14T10:43:31Z
2018-01-14T10:43:31Z 2003 |
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| Type |
Article
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| Identifier |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ / J.M. Khalack, V.M. Loktev // Физика низких температур. — 2003. — Т. 29, № 5. — С. 577-589. — Бібліогр.: 25 назв. — англ.
0132-6414 PACS: 61.48.+c, 78.30.Na http://dspace.nbuv.gov.ua/handle/123456789/128850 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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