Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity
The magnetic properties of oxygen pair clusters are investigated theoretically for different cluster geometries which can be realized by doping molecular cryomatrices with oxygen. Anomalous temperature and pressure behavior of the magnetic susceptibility, heat capacity, and entropy is predicted. It...
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| Дата: | 2000 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2000
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/129226 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity / Yu.A. Freiman, S.M. Tretyak, A. Jeżowski // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 1029-1043. — Бібліогр.: 21 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-129226 |
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irk-123456789-1292262018-01-18T03:02:42Z Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity Freiman, Yu.A. Tretyak, S.M. Jeżowski, A. Low-Temperature Physics and Chemistry in Cryomatrice The magnetic properties of oxygen pair clusters are investigated theoretically for different cluster geometries which can be realized by doping molecular cryomatrices with oxygen. Anomalous temperature and pressure behavior of the magnetic susceptibility, heat capacity, and entropy is predicted. It is proposed to use these anomalies for studying the parameters characterizing the oxygen clusters and the parameters of the host matrix: the effective spin-figure interaction constant D for the molecule in the matrix, the exchange parameter J, and the number of pair clusters Np, which can deviate markedly from the purely random value Np=6Nc² (N is Avogadro’s number, and c is the molar concentration of the impurity). The data on the magnetic susceptibility may be used to analyze the character of the positional and orientational short-range order in the solid solution. The value of D contains information about the orientational order parameter; the distance and angular dependence of the exchange interaction parameter are still subject to discussion in the literature. The temperature dependence of Np contains information about diffusion and clusterization processes in the system. 2000 Article Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity / Yu.A. Freiman, S.M. Tretyak, A. Jeżowski // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 1029-1043. — Бібліогр.: 21 назв. — англ. 0132-6414 PACS: 36.40.Cg, 65.40.+g, 65.40.+m, 75.40.Cx http://dspace.nbuv.gov.ua/handle/123456789/129226 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 |
Low-Temperature Physics and Chemistry in Cryomatrice Low-Temperature Physics and Chemistry in Cryomatrice |
| spellingShingle |
Low-Temperature Physics and Chemistry in Cryomatrice Low-Temperature Physics and Chemistry in Cryomatrice Freiman, Yu.A. Tretyak, S.M. Jeżowski, A. Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity Физика низких температур |
| description |
The magnetic properties of oxygen pair clusters are investigated theoretically for different cluster geometries which can be realized by doping molecular cryomatrices with oxygen. Anomalous temperature and pressure behavior of the magnetic susceptibility, heat capacity, and entropy is predicted. It is proposed to use these anomalies for studying the parameters characterizing the oxygen clusters and the parameters of the host matrix: the effective spin-figure interaction constant D for the molecule in the matrix, the exchange parameter J, and the number of pair clusters Np, which can deviate markedly from the purely random value Np=6Nc² (N is Avogadro’s number, and c is the molar concentration of the impurity). The data on the magnetic susceptibility may be used to analyze the character of the positional and orientational short-range order in the solid solution. The value of D contains information about the orientational order parameter; the distance and angular dependence of the exchange interaction parameter are still subject to discussion in the literature. The temperature dependence of Np contains information about diffusion and clusterization processes in the system. |
| format |
Article |
| author |
Freiman, Yu.A. Tretyak, S.M. Jeżowski, A. |
| author_facet |
Freiman, Yu.A. Tretyak, S.M. Jeżowski, A. |
| author_sort |
Freiman, Yu.A. |
| title |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| title_short |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| title_full |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| title_fullStr |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| title_full_unstemmed |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| title_sort |
low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2000 |
| topic_facet |
Low-Temperature Physics and Chemistry in Cryomatrice |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/129226 |
| citation_txt |
Low-temperature anomalies in the magnetic and thermal properties of molecular cryocrystals doped with oxygen impurity / Yu.A. Freiman, S.M. Tretyak, A. Jeżowski // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 1029-1043. — Бібліогр.: 21 назв. — англ. |
| series |
Физика низких температур |
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AT freimanyua lowtemperatureanomaliesinthemagneticandthermalpropertiesofmolecularcryocrystalsdopedwithoxygenimpurity AT tretyaksm lowtemperatureanomaliesinthemagneticandthermalpropertiesofmolecularcryocrystalsdopedwithoxygenimpurity AT jezowskia lowtemperatureanomaliesinthemagneticandthermalpropertiesofmolecularcryocrystalsdopedwithoxygenimpurity |
| first_indexed |
2023-10-18T20:57:12Z |
| last_indexed |
2023-10-18T20:57:12Z |
| _version_ |
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