Modeling of magnetic and magnetocaloric properties of La₀̣.₇Ba₀.₃MnO₃ manganites by Monte Carlo method
In the work the temperature dependence of magnetization, entropy changes, and the Curie temperature of La₀̣.₇Ba₀.₃MnO₃ using Monte Carlo method and Heisenberg model were investigated. We used the magnetic exchange parameters from the first-principles calculations. In the simulation, magnetic Mn³ᐩ an...
Збережено в:
| Дата: | 2012 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2012
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| Назва видання: | Functional Materials |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/135283 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Modeling of magnetic and magnetocaloric properties of La₀̣.₇Ba₀.₃MnO₃ manganites by Monte Carlo method / O. Pavlukhina, V. Buchelnikov, V. Sokolovskiy // Functional Materials. — 2012. — Т. 19, № 1. — С. 97-101. — Бібліогр.: 17 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | In the work the temperature dependence of magnetization, entropy changes, and the Curie temperature of La₀̣.₇Ba₀.₃MnO₃ using Monte Carlo method and Heisenberg model were investigated. We used the magnetic exchange parameters from the first-principles calculations. In the simulation, magnetic Mn³ᐩ and Mn⁴ᐩ ions are described by classical Heisenberg spins, while oxygen, lanthanum and calcium ions are considered as non-magnetic. Mn magnetic ions are distributed on R3c lattice according to the perovskite structure of the manganite. The Curie temperature and magnetocaloric effect values obtained during the theoretical simulations are in a good agreement with the experimental data. |
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