Structure and thermal expansion of the low-temperature phase of SF ₂
Powder x-ray and neutron diffraction studies of the crystalline structure, lattice parameters and thermal expansion coefficients of sulphur hexafluoride SF₆ are performed in the temperature range 1.64-110 K. It is shown that the low-temperature phase (at T < 94.3 K) is monoclinic, space group C2/...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2000 |
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| Sprache: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2000
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| Zitieren: | Structure and thermal expansion of the low-temperature phase of SF ₂ / A.P. Isakina and A.I. Prokhvatilov, J. Rodriguez-Carvajal // Физика низких температур. — 2000. — Т. 26, № 4. — С. 404-414. — Бібліогр.: 28 назв. — англ. |
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Isakina, A.P. Prokhvatilov, A.I. Rodriguez-Carvajal, J. 2018-01-16T11:13:44Z 2018-01-16T11:13:44Z 2000 Structure and thermal expansion of the low-temperature phase of SF ₂ / A.P. Isakina and A.I. Prokhvatilov, J. Rodriguez-Carvajal // Физика низких температур. — 2000. — Т. 26, № 4. — С. 404-414. — Бібліогр.: 28 назв. — англ. 0132-6414 PACS: 61.10.-i, 61.12.-q, 61.50.Ks, 61.50.Em, 65.70.+y, 65.50.+m https://nasplib.isofts.kiev.ua/handle/123456789/129065 Powder x-ray and neutron diffraction studies of the crystalline structure, lattice parameters and thermal expansion coefficients of sulphur hexafluoride SF₆ are performed in the temperature range 1.64-110 K. It is shown that the low-temperature phase (at T < 94.3 K) is monoclinic, space group C2/m (C2h³ ) with Z=6 in which 1/3 of molecules SF₆ occupy the positions of higher symmetry (2/m) and 2/3 of molecules - lower one (m). As follows from the analysis of obtained structural results, an availability of two types of molecular local symmetry positions is responsible for the anisotropic character of molecular rotation, peculiarities on the temperature dependences of structural and thermo-dynamic properties of SF₆ crystals at low-temperature phase, especially near Tc of orientational phase transition. It is carried out a detail comparison the present results with the known literature data. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Динамика кристаллической решетки Structure and thermal expansion of the low-temperature phase of SF ₂ Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Structure and thermal expansion of the low-temperature phase of SF ₂ |
| spellingShingle |
Structure and thermal expansion of the low-temperature phase of SF ₂ Isakina, A.P. Prokhvatilov, A.I. Rodriguez-Carvajal, J. Динамика кристаллической решетки |
| title_short |
Structure and thermal expansion of the low-temperature phase of SF ₂ |
| title_full |
Structure and thermal expansion of the low-temperature phase of SF ₂ |
| title_fullStr |
Structure and thermal expansion of the low-temperature phase of SF ₂ |
| title_full_unstemmed |
Structure and thermal expansion of the low-temperature phase of SF ₂ |
| title_sort |
structure and thermal expansion of the low-temperature phase of sf ₂ |
| author |
Isakina, A.P. Prokhvatilov, A.I. Rodriguez-Carvajal, J. |
| author_facet |
Isakina, A.P. Prokhvatilov, A.I. Rodriguez-Carvajal, J. |
| topic |
Динамика кристаллической решетки |
| topic_facet |
Динамика кристаллической решетки |
| publishDate |
2000 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Powder x-ray and neutron diffraction studies of the crystalline structure, lattice parameters and thermal expansion coefficients of sulphur hexafluoride SF₆ are performed in the temperature range 1.64-110 K. It is shown that the low-temperature phase (at T < 94.3 K) is monoclinic, space group C2/m (C2h³ ) with Z=6 in which 1/3 of molecules SF₆ occupy the positions of higher symmetry (2/m) and 2/3 of molecules - lower one (m). As follows from the analysis of obtained structural results, an availability of two types of molecular local symmetry positions is responsible for the anisotropic character of molecular rotation, peculiarities on the temperature dependences of structural and thermo-dynamic properties of SF₆ crystals at low-temperature phase, especially near Tc of orientational phase transition. It is carried out a detail comparison the present results with the known literature data.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/129065 |
| citation_txt |
Structure and thermal expansion of the low-temperature phase of SF ₂ / A.P. Isakina and A.I. Prokhvatilov, J. Rodriguez-Carvajal // Физика низких температур. — 2000. — Т. 26, № 4. — С. 404-414. — Бібліогр.: 28 назв. — англ. |
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AT isakinaap structureandthermalexpansionofthelowtemperaturephaseofsf2 AT prokhvatilovai structureandthermalexpansionofthelowtemperaturephaseofsf2 AT rodriguezcarvajalj structureandthermalexpansionofthelowtemperaturephaseofsf2 |
| first_indexed |
2025-12-07T19:59:40Z |
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2025-12-07T19:59:40Z |
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