Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions
One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman
 spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger
 number of phonon modes than allowed for the rhombohedral structure. Additional phonon modes
...
Збережено в:
| Опубліковано в: : | Физика низких температур |
|---|---|
| Дата: | 2006 |
| Автори: | , , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
|
| Теми: | |
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/120131 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions / V. Gnezdilov, K.-Y. Choi, Yu. Pashkevich, P. Lemmens, S. Shiryaev, G. Bychkov, S. Barilo, V. Fomin, A.V. Yaremenko // Физика низких температур. — 2006. — Т. 32, № 2. — С. 219-226. — Бібліогр.: 38 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862556597046214656 |
|---|---|
| author | Gnezdilov, V. Choi, K.-Y. Pashkevich, Yu. Lemmens, P. Shiryaev, S. Bychkov, G. Barilo, S. Fomin, V. Yeremenko, A.V. |
| author_facet | Gnezdilov, V. Choi, K.-Y. Pashkevich, Yu. Lemmens, P. Shiryaev, S. Bychkov, G. Barilo, S. Fomin, V. Yeremenko, A.V. |
| citation_txt | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions / V. Gnezdilov, K.-Y. Choi, Yu. Pashkevich, P. Lemmens, S. Shiryaev, G. Bychkov, S. Barilo, V. Fomin, A.V. Yaremenko // Физика низких температур. — 2006. — Т. 32, № 2. — С. 219-226. — Бібліогр.: 38 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman
spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger
number of phonon modes than allowed for the rhombohedral structure. Additional phonon modes
are interpreted in terms of activated modes due to lattice distortions, arising from the Jahn–Teller
(JT) activity of the intermediate-spin (IS) state of Co³⁺ ions. In particular, the 608-cm⁻¹
stretching-type mode shows anomalous behavior in peak energy and scattering intensity as a
function of temperature. The anomalous temperature dependence of the second-order phonon
excitations spectra is in accordance with the Franck–Condon mechanism that is characteristic for a
JT orbital order.
|
| first_indexed | 2025-11-25T22:33:24Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-120131 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T22:33:24Z |
| publishDate | 2006 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Gnezdilov, V. Choi, K.-Y. Pashkevich, Yu. Lemmens, P. Shiryaev, S. Bychkov, G. Barilo, S. Fomin, V. Yeremenko, A.V. 2017-06-11T07:13:11Z 2017-06-11T07:13:11Z 2006 Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions / V. Gnezdilov, K.-Y. Choi, Yu. Pashkevich, P. Lemmens, S. Shiryaev, G. Bychkov, S. Barilo, V. Fomin, A.V. Yaremenko // Физика низких температур. — 2006. — Т. 32, № 2. — С. 219-226. — Бібліогр.: 38 назв. — англ. 0132-6414 PACS: 71.70.Ej, 63.20.Kr, 78.30.Hv https://nasplib.isofts.kiev.ua/handle/123456789/120131 One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman
 spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger
 number of phonon modes than allowed for the rhombohedral structure. Additional phonon modes
 are interpreted in terms of activated modes due to lattice distortions, arising from the Jahn–Teller
 (JT) activity of the intermediate-spin (IS) state of Co³⁺ ions. In particular, the 608-cm⁻¹
 stretching-type mode shows anomalous behavior in peak energy and scattering intensity as a
 function of temperature. The anomalous temperature dependence of the second-order phonon
 excitations spectra is in accordance with the Franck–Condon mechanism that is characteristic for a
 JT orbital order. This work was supported by INTAS Grant
 ¹01-0278, NATO Collaborative Linkage Grant
 PST.CLG.977766 and DFG through SPP1073. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Динамика кристаллической решетки Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions Article published earlier |
| spellingShingle | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions Gnezdilov, V. Choi, K.-Y. Pashkevich, Yu. Lemmens, P. Shiryaev, S. Bychkov, G. Barilo, S. Fomin, V. Yeremenko, A.V. Динамика кристаллической решетки |
| title | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions |
| title_full | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions |
| title_fullStr | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions |
| title_full_unstemmed | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions |
| title_short | Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions |
| title_sort | low temperature mixed spin state of co³⁺ in lacoo₃ evidenced from jahn–teller lattice distortions |
| topic | Динамика кристаллической решетки |
| topic_facet | Динамика кристаллической решетки |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/120131 |
| work_keys_str_mv | AT gnezdilovv lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT choiky lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT pashkevichyu lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT lemmensp lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT shiryaevs lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT bychkovg lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT barilos lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT fominv lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions AT yeremenkoav lowtemperaturemixedspinstateofco3inlacoo3evidencedfromjahntellerlatticedistortions |