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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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Zitieren: | 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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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 |
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| first_indexed |
2025-11-25T20:35:29Z |
| last_indexed |
2025-11-25T20:35:29Z |
| _version_ |
1849795993474695168 |