Theory of rare gas alloys: heat capacity
Low-temperature heat capacity of cryocrystals, which contain impurity clusters has been investigated
 theoretically and experimentally. Such defects might essentially enrich low-frequency part of the phonon
 spectrum by introducing both localized and delocalized vibrations. The effec...
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| Опубліковано в: : | Физика низких температур |
|---|---|
| Дата: | 2007 |
| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/121776 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Theory of rare gas alloys: heat capacity / M.I. Bagatskii, S.B. Feodosyev, I.A. Gospodarev, O.V. Kotlyar, E.V. Manzhelii,
 A.V. Nedzvetskiy, E.S. Syrkin // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 741-746. — Бібліогр.: 33 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862601016308924416 |
|---|---|
| author | Bagatskii, M.I. Feodosyev, S.B. Gospodarev, I.A. Kotlyar, O.V. Manzhelii, E.V. Nedzvetskiy, A.V. Syrkin, E.S. |
| author_facet | Bagatskii, M.I. Feodosyev, S.B. Gospodarev, I.A. Kotlyar, O.V. Manzhelii, E.V. Nedzvetskiy, A.V. Syrkin, E.S. |
| citation_txt | Theory of rare gas alloys: heat capacity / M.I. Bagatskii, S.B. Feodosyev, I.A. Gospodarev, O.V. Kotlyar, E.V. Manzhelii,
 A.V. Nedzvetskiy, E.S. Syrkin // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 741-746. — Бібліогр.: 33 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Low-temperature heat capacity of cryocrystals, which contain impurity clusters has been investigated
theoretically and experimentally. Such defects might essentially enrich low-frequency part of the phonon
spectrum by introducing both localized and delocalized vibrations. The effect of both types of the vibrations
on the temperature dependence of the heat capacity is analyzed. Heat capacity of the disordered solid solution
Kr–Ar (Ar concentration is ~25%) is studied as an example of the effect of the light weakly connected
impurities on the low-temperature thermodynamic characteristics of the system. The mass defect of such an
impurity induces «phonon pumping» from the low-frequency part of the spectrum into the high-frequency
part and decreasing the low-temperature heat capacity, while the weakened interaction between the impurity
and the host atoms combined with even weaker interaction between the impurities leads to the formation of
the low-temperature maximum on the heat capacity temperature dependence. The analysis performed shows
that at rather high Ar concentrations, the nonmonotonous temperature dependence of the relative change in
the heat capacity of solid Kr₁₋pArp solutions is determined by excitation of delocalized high-dispersion
low-frequency phonons.
|
| first_indexed | 2025-11-28T01:11:36Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-121776 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-28T01:11:36Z |
| publishDate | 2007 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Bagatskii, M.I. Feodosyev, S.B. Gospodarev, I.A. Kotlyar, O.V. Manzhelii, E.V. Nedzvetskiy, A.V. Syrkin, E.S. 2017-06-16T07:21:52Z 2017-06-16T07:21:52Z 2007 Theory of rare gas alloys: heat capacity / M.I. Bagatskii, S.B. Feodosyev, I.A. Gospodarev, O.V. Kotlyar, E.V. Manzhelii,
 A.V. Nedzvetskiy, E.S. Syrkin // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 741-746. — Бібліогр.: 33 назв. — англ. 0132-6414 PACS: 63.20.–e; 63.20.Mt; 63.50.+x; 63.70.+h https://nasplib.isofts.kiev.ua/handle/123456789/121776 Low-temperature heat capacity of cryocrystals, which contain impurity clusters has been investigated
 theoretically and experimentally. Such defects might essentially enrich low-frequency part of the phonon
 spectrum by introducing both localized and delocalized vibrations. The effect of both types of the vibrations
 on the temperature dependence of the heat capacity is analyzed. Heat capacity of the disordered solid solution
 Kr–Ar (Ar concentration is ~25%) is studied as an example of the effect of the light weakly connected
 impurities on the low-temperature thermodynamic characteristics of the system. The mass defect of such an
 impurity induces «phonon pumping» from the low-frequency part of the spectrum into the high-frequency
 part and decreasing the low-temperature heat capacity, while the weakened interaction between the impurity
 and the host atoms combined with even weaker interaction between the impurities leads to the formation of
 the low-temperature maximum on the heat capacity temperature dependence. The analysis performed shows
 that at rather high Ar concentrations, the nonmonotonous temperature dependence of the relative change in
 the heat capacity of solid Kr₁₋pArp solutions is determined by excitation of delocalized high-dispersion
 low-frequency phonons. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Classical Cryocrystals Theory of rare gas alloys: heat capacity Article published earlier |
| spellingShingle | Theory of rare gas alloys: heat capacity Bagatskii, M.I. Feodosyev, S.B. Gospodarev, I.A. Kotlyar, O.V. Manzhelii, E.V. Nedzvetskiy, A.V. Syrkin, E.S. Classical Cryocrystals |
| title | Theory of rare gas alloys: heat capacity |
| title_full | Theory of rare gas alloys: heat capacity |
| title_fullStr | Theory of rare gas alloys: heat capacity |
| title_full_unstemmed | Theory of rare gas alloys: heat capacity |
| title_short | Theory of rare gas alloys: heat capacity |
| title_sort | theory of rare gas alloys: heat capacity |
| topic | Classical Cryocrystals |
| topic_facet | Classical Cryocrystals |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/121776 |
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