Pressure effect on magnetic susceptibility of LaCoO₃
The effect of pressure on magnetic properties of LaCoO₃ is studied experimentally and theoretically. The pressure dependence of magnetic susceptibility χ of LaCoO₃ is obtained by precise measurements of χ as a function of the hydrostatic pressure P up to 2 kbar in the temperature range from 78 K to...
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| Published in: | Физика низких температур |
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| Date: | 2018 |
| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2018
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/175990 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Pressure effect on magnetic susceptibility of LaCoO₃ / A.S. Panfilov, G.E. Grechnev, I.P. Zhuravleva, A.A. Lyogenkaya, V.A. Pashchenko, B.N. Savenko, D. Novoselov, D. Prabhakaran, I.O. Troyanchuk // Физика низких температур. — 2018. — Т. 44, № 4. — С. 432-438. — Бібліогр.: 46 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862649593656770560 |
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| author | Panfilov, A.S. Grechnev, G.E. Zhuravleva, I.P. Lyogenkaya, A.A. Pashchenko, V.A. Savenko, B.N. Novoselov, D. Prabhakaran, D. Troyanchuk, I.O. |
| author_facet | Panfilov, A.S. Grechnev, G.E. Zhuravleva, I.P. Lyogenkaya, A.A. Pashchenko, V.A. Savenko, B.N. Novoselov, D. Prabhakaran, D. Troyanchuk, I.O. |
| citation_txt | Pressure effect on magnetic susceptibility of LaCoO₃ / A.S. Panfilov, G.E. Grechnev, I.P. Zhuravleva, A.A. Lyogenkaya, V.A. Pashchenko, B.N. Savenko, D. Novoselov, D. Prabhakaran, I.O. Troyanchuk // Физика низких температур. — 2018. — Т. 44, № 4. — С. 432-438. — Бібліогр.: 46 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The effect of pressure on magnetic properties of LaCoO₃ is studied experimentally and theoretically. The pressure dependence of magnetic susceptibility χ of LaCoO₃ is obtained by precise measurements of χ as a function of the hydrostatic pressure P up to 2 kbar in the temperature range from 78 K to 300 K. A pronounced magnitude of the pressure effect is found to be negative in sign and strongly temperature dependent. The obtained experimental data are analysed by using a two-level model and DFT+U calculations of the electronic structure of LaCoO₃ . In particular, the fixed spin moment method was employed to obtain a volume dependence of the total energy difference Δ between the low spin and the intermediate spin states of LaCoO₃ . Analysis of the obtained experimental χ(P) dependence within the two-level model, as well as our DFT+U calculations, have revealed the anomalous large decrease in the energy difference Δ with increasing of the unit cell volume. This effect, taking into account a thermal expansion, can be responsible for the temperatures dependence of Δ, predicting its vanishing near room temperature.
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| first_indexed | 2025-12-01T15:57:28Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-175990 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-01T15:57:28Z |
| publishDate | 2018 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Panfilov, A.S. Grechnev, G.E. Zhuravleva, I.P. Lyogenkaya, A.A. Pashchenko, V.A. Savenko, B.N. Novoselov, D. Prabhakaran, D. Troyanchuk, I.O. 2021-02-03T08:51:21Z 2021-02-03T08:51:21Z 2018 Pressure effect on magnetic susceptibility of LaCoO₃ / A.S. Panfilov, G.E. Grechnev, I.P. Zhuravleva, A.A. Lyogenkaya, V.A. Pashchenko, B.N. Savenko, D. Novoselov, D. Prabhakaran, I.O. Troyanchuk // Физика низких температур. — 2018. — Т. 44, № 4. — С. 432-438. — Бібліогр.: 46 назв. — англ. 0132-6414 PACS: 71.20.Eh, 75.30.Mb, 75.80.+q https://nasplib.isofts.kiev.ua/handle/123456789/175990 The effect of pressure on magnetic properties of LaCoO₃ is studied experimentally and theoretically. The pressure dependence of magnetic susceptibility χ of LaCoO₃ is obtained by precise measurements of χ as a function of the hydrostatic pressure P up to 2 kbar in the temperature range from 78 K to 300 K. A pronounced magnitude of the pressure effect is found to be negative in sign and strongly temperature dependent. The obtained experimental data are analysed by using a two-level model and DFT+U calculations of the electronic structure of LaCoO₃ . In particular, the fixed spin moment method was employed to obtain a volume dependence of the total energy difference Δ between the low spin and the intermediate spin states of LaCoO₃ . Analysis of the obtained experimental χ(P) dependence within the two-level model, as well as our DFT+U calculations, have revealed the anomalous large decrease in the energy difference Δ with increasing of the unit cell volume. This effect, taking into account a thermal expansion, can be responsible for the temperatures dependence of Δ, predicting its vanishing near room temperature. This work was supported by the Russian Foundation for
 Basic Research according to the research project 17-32-
 50042-mol_nr. The authors acknowledge numerous discussions on the subject with V.V. Efimov. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкотемпеpатуpный магнетизм Pressure effect on magnetic susceptibility of LaCoO₃ Article published earlier |
| spellingShingle | Pressure effect on magnetic susceptibility of LaCoO₃ Panfilov, A.S. Grechnev, G.E. Zhuravleva, I.P. Lyogenkaya, A.A. Pashchenko, V.A. Savenko, B.N. Novoselov, D. Prabhakaran, D. Troyanchuk, I.O. Низкотемпеpатуpный магнетизм |
| title | Pressure effect on magnetic susceptibility of LaCoO₃ |
| title_full | Pressure effect on magnetic susceptibility of LaCoO₃ |
| title_fullStr | Pressure effect on magnetic susceptibility of LaCoO₃ |
| title_full_unstemmed | Pressure effect on magnetic susceptibility of LaCoO₃ |
| title_short | Pressure effect on magnetic susceptibility of LaCoO₃ |
| title_sort | pressure effect on magnetic susceptibility of lacoo₃ |
| topic | Низкотемпеpатуpный магнетизм |
| topic_facet | Низкотемпеpатуpный магнетизм |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/175990 |
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