Phase transitions in the Mitsui model
In this paper, phase transitions in the Mitsui model without longitudinal field but with a transverse one are investigated in the mean field approximation. The one-to-one correspondence has been established between this model and the two-sublattice Ising-type model with longitudinal and transverse f...
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| Published in: | Condensed Matter Physics |
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| Date: | 2011 |
| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2011
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119982 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Phase transitions in the Mitsui model / Yu.I. Dublenych // Condensed Matter Physics. — 2011. — Т. 14, № 2. — С. 23603:1-20. — Бібліогр.: 13 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | In this paper, phase transitions in the Mitsui model without longitudinal field but with a transverse one are investigated in the mean field approximation. The one-to-one correspondence has been established between this model and the two-sublattice Ising-type model with longitudinal and transverse fields. Phase diagrams and diagrams of existence of the ferroelectric phase are constructed. In the case Ω = 0 (Ω is the transverse field), a simple analytical expression for the tricritical temperature and the condition of existence of the tricritical point are obtained. For Ω ≠ 0, systems of equations for the tricritical point and for the condition of its existence are written.
В роботi в наближеннi середнього поля дослiджено фазовi переходи в моделi Мiцуi
без поздовжнього поля, проте з поперечним полем. Встановлено взаємооднозначну залежнiсть мiж такою моделлю та двопiдґратковою моделлю типу Iзiнга з поздовжнiм
i поперечним полями. Побудовано фазовi дiаграми та дiаграми областей iснування сегнетофази. Для випадку Ω = 0 (Ω–поперечне поле) одержано простий аналiтичний вираз для трикритичної температури й умову iснування трикритичної точки. Для Ω 6= 0 записано системи рiвнянь для трикритичної точки й умови її iснування.
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| ISSN: | 1607-324X |