On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀
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...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| 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/123456789/128850 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
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Khalack, J.M. Loktev, V.M. 2018-01-14T10:43:31Z 2018-01-14T10:43:31Z 2003 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 https://nasplib.isofts.kiev.ua/handle/123456789/128850 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. We would like to thank Profs. A.S. Bakai, Yu.B. Gaididei, M.A. Ivanov, and V.G. Manzhelii, as well as Dr. A.N. Alexandrovskii for valuable and critical discussions. This study was supported in part by the Program «Investigation of Fundamental Problems and Properties of the Matter on Micro- and Macrolevels» of the National Academy of Sciences of Ukraine, by the INTAS Foundation under Grant INTAS 97-0368, and also by project No. 2669 «Structure and plasticity of fullerite» of Science Technology Center of Ukraine. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Динамика кристаллической решетки On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ |
| spellingShingle |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ Khalack, J.M. Loktev, V.M. Динамика кристаллической решетки |
| title_short |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ |
| title_full |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ |
| title_fullStr |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ |
| title_full_unstemmed |
On the orientational relief of the intermolecular potential and the structure of domain walls in fullerite C₆₀ |
| title_sort |
on the orientational relief of the intermolecular potential and the structure of domain walls in fullerite c₆₀ |
| author |
Khalack, J.M. Loktev, V.M. |
| author_facet |
Khalack, J.M. Loktev, V.M. |
| topic |
Динамика кристаллической решетки |
| topic_facet |
Динамика кристаллической решетки |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| 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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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128850 |
| fulltext |
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| citation_txt |
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. |
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AT khalackjm ontheorientationalreliefoftheintermolecularpotentialandthestructureofdomainwallsinfulleritec60 AT loktevvm ontheorientationalreliefoftheintermolecularpotentialandthestructureofdomainwallsinfulleritec60 |
| first_indexed |
2025-11-24T15:03:07Z |
| last_indexed |
2025-11-24T15:03:07Z |
| _version_ |
1850847935185551360 |