Low-temperature orientational ordering and possible domain structures in C₆₀

Based on a simple model for the ordering of hexagons on a square planar lattice, an attempt is made to consider the possible structure of С₆₀ fullerite in its low-temperature phase. It is shown that hexagons representing fullerenes oriented along the С₃ axes of the sc lattice can be ordered int...

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Дата:2001
Автори: Loktev, V. M., Khalack, J.N., Pogorelov, Y.G.
Формат: Стаття
Мова:English
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2001
Назва видання:Физика низких температур
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Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/128588
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Low-temperature orientational ordering and possible domain structures in C₆₀ / V.M. Loktev, J.N. Khalack, Y.G. Pogorelov // Физика низких температур. — 2001. — Т. 27, № 5. — С. 539-546. — Бібліогр.: 18 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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spelling irk-123456789-1285882018-01-13T03:03:03Z Low-temperature orientational ordering and possible domain structures in C₆₀ Loktev, V. M. Khalack, J.N. Pogorelov, Y.G. Физические свойства криокристаллов Based on a simple model for the ordering of hexagons on a square planar lattice, an attempt is made to consider the possible structure of С₆₀ fullerite in its low-temperature phase. It is shown that hexagons representing fullerenes oriented along the С₃ axes of the sc lattice can be ordered into an ideal structure with four nonequivalent molecules in the unit cell. Then the energy degeneracy for the rotation of each hexagon by π/3 around its С₃ axis leaves the translational and orientational order in this structure but leads to a random distribution of π/3 rotations and hence to an “averaged” unit cell with two molecules. However, the most relevant structural defects are not these intrinsic “misorientations” but some walls between domains with different sequences of the above-mentioned two (nonideal) sublattices. Numerical estimates are made for the anisotropic intermolecular potential, showing that the anisotropy is noticeably smaller for molecules in walls than in domains. 2001 Article Low-temperature orientational ordering and possible domain structures in C₆₀ / V.M. Loktev, J.N. Khalack, Y.G. Pogorelov // Физика низких температур. — 2001. — Т. 27, № 5. — С. 539-546. — Бібліогр.: 18 назв. — англ. 0132-6414 PACS: 61.48.+c, 78.30.Na http://dspace.nbuv.gov.ua/handle/123456789/128588 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Физические свойства криокристаллов
Физические свойства криокристаллов
spellingShingle Физические свойства криокристаллов
Физические свойства криокристаллов
Loktev, V. M.
Khalack, J.N.
Pogorelov, Y.G.
Low-temperature orientational ordering and possible domain structures in C₆₀
Физика низких температур
description Based on a simple model for the ordering of hexagons on a square planar lattice, an attempt is made to consider the possible structure of С₆₀ fullerite in its low-temperature phase. It is shown that hexagons representing fullerenes oriented along the С₃ axes of the sc lattice can be ordered into an ideal structure with four nonequivalent molecules in the unit cell. Then the energy degeneracy for the rotation of each hexagon by π/3 around its С₃ axis leaves the translational and orientational order in this structure but leads to a random distribution of π/3 rotations and hence to an “averaged” unit cell with two molecules. However, the most relevant structural defects are not these intrinsic “misorientations” but some walls between domains with different sequences of the above-mentioned two (nonideal) sublattices. Numerical estimates are made for the anisotropic intermolecular potential, showing that the anisotropy is noticeably smaller for molecules in walls than in domains.
format Article
author Loktev, V. M.
Khalack, J.N.
Pogorelov, Y.G.
author_facet Loktev, V. M.
Khalack, J.N.
Pogorelov, Y.G.
author_sort Loktev, V. M.
title Low-temperature orientational ordering and possible domain structures in C₆₀
title_short Low-temperature orientational ordering and possible domain structures in C₆₀
title_full Low-temperature orientational ordering and possible domain structures in C₆₀
title_fullStr Low-temperature orientational ordering and possible domain structures in C₆₀
title_full_unstemmed Low-temperature orientational ordering and possible domain structures in C₆₀
title_sort low-temperature orientational ordering and possible domain structures in c₆₀
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2001
topic_facet Физические свойства криокристаллов
url http://dspace.nbuv.gov.ua/handle/123456789/128588
citation_txt Low-temperature orientational ordering and possible domain structures in C₆₀ / V.M. Loktev, J.N. Khalack, Y.G. Pogorelov // Физика низких температур. — 2001. — Т. 27, № 5. — С. 539-546. — Бібліогр.: 18 назв. — англ.
series Физика низких температур
work_keys_str_mv AT loktevvm lowtemperatureorientationalorderingandpossibledomainstructuresinc60
AT khalackjn lowtemperatureorientationalorderingandpossibledomainstructuresinc60
AT pogorelovyg lowtemperatureorientationalorderingandpossibledomainstructuresinc60
first_indexed 2025-07-09T09:24:10Z
last_indexed 2025-07-09T09:24:10Z
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