Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters

Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters

In the present paper we generalize a phenomenological model developed by Gomonay and Loktev (Fiz. Nizk. Temp. 31, 1002 (2005)) for the description of magnetostructural phase transitions and related peculiarities of elastic properties in solid oxygen under high pressure and/or temperature below 40 K....

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Date:2007
Main Authors: Gomonay, E.V., Loktev, V.M.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2007
Series:Физика низких температур
Subjects:
Classical Cryocrystals
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/121772
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters / E.V. Gomonay, V.M. Loktev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 711-718. — Бібліогр.: 16 назв. — англ.

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spelling nasplib_isofts_kiev_ua-123456789-1217722025-06-03T16:29:06Z Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters Gomonay, E.V. Loktev, V.M. Classical Cryocrystals In the present paper we generalize a phenomenological model developed by Gomonay and Loktev (Fiz. Nizk. Temp. 31, 1002 (2005)) for the description of magnetostructural phase transitions and related peculiarities of elastic properties in solid oxygen under high pressure and/or temperature below 40 K. We show that variation of all the lattice parameters in the vicinity of a–b phase transition is due to both the shift of basal closed-packed planes and appearance of the long-range magnetic order. Competition between these two factors from one side and lattice compression below Tab from another produces nonmonotonic temperature dependence of lattice parameter b (along monoclinic axis). Steep decrease of the sound velocities in the vicinity of Tab can be explained by the softening of the lattice with respect to shift of the close-packed planes (described by the constant K₂) prior to phase transition point. We anticipate an analogous softening of sound velocities in the vicinity of a–d phase transition and nonmonotonic pressure dependence of sound velocities in a phase. We would like to acknowledge all the participants of CC-2006 Conference for keen interest to our presentations and fruitful discussions. 2007 Article Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters / E.V. Gomonay, V.M. Loktev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 711-718. — Бібліогр.: 16 назв. — англ. 0132-6414 PACS: 75.50.Ee; 61.50.Ks; 81.40.Vw https://nasplib.isofts.kiev.ua/handle/123456789/121772 en Физика низких температур application/pdf 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 Classical Cryocrystals
Classical Cryocrystals
spellingShingle Classical Cryocrystals
Classical Cryocrystals
Gomonay, E.V.
Loktev, V.M.
Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
Физика низких температур
description In the present paper we generalize a phenomenological model developed by Gomonay and Loktev (Fiz. Nizk. Temp. 31, 1002 (2005)) for the description of magnetostructural phase transitions and related peculiarities of elastic properties in solid oxygen under high pressure and/or temperature below 40 K. We show that variation of all the lattice parameters in the vicinity of a–b phase transition is due to both the shift of basal closed-packed planes and appearance of the long-range magnetic order. Competition between these two factors from one side and lattice compression below Tab from another produces nonmonotonic temperature dependence of lattice parameter b (along monoclinic axis). Steep decrease of the sound velocities in the vicinity of Tab can be explained by the softening of the lattice with respect to shift of the close-packed planes (described by the constant K₂) prior to phase transition point. We anticipate an analogous softening of sound velocities in the vicinity of a–d phase transition and nonmonotonic pressure dependence of sound velocities in a phase.
format Article
author Gomonay, E.V.
Loktev, V.M.
author_facet Gomonay, E.V.
Loktev, V.M.
author_sort Gomonay, E.V.
title Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
title_short Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
title_full Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
title_fullStr Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
title_full_unstemmed Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters
title_sort shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: ii. temperature/pressure dependence of sound velocities and lattice parameters
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2007
topic_facet Classical Cryocrystals
url https://nasplib.isofts.kiev.ua/handle/123456789/121772
citation_txt Shift of close-packed basal planes as an order parameter of transitions between antiferromangetic phases in solid oxygen: II. Temperature/pressure dependence of sound velocities and lattice parameters / E.V. Gomonay, V.M. Loktev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 711-718. — Бібліогр.: 16 назв. — англ.
series Физика низких температур
work_keys_str_mv AT gomonayev shiftofclosepackedbasalplanesasanorderparameteroftransitionsbetweenantiferromangeticphasesinsolidoxygeniitemperaturepressuredependenceofsoundvelocitiesandlatticeparameters
AT loktevvm shiftofclosepackedbasalplanesasanorderparameteroftransitionsbetweenantiferromangeticphasesinsolidoxygeniitemperaturepressuredependenceofsoundvelocitiesandlatticeparameters
first_indexed 2025-11-25T20:35:29Z
last_indexed 2025-11-25T20:35:29Z
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