Nonlinear dynamics of ferroelectrics with three-well local potential
For Sn₂P₂S₆
 ferroelectrics, the appearance of spontaneous polarization is related to stereoactivity of tin cations
 and valence fluctuations of phosphorous cations. Here, the continuous phase transition and its behavior under
 pressure is determined by thee-well local potent...
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| Published in: | Condensed Matter Physics |
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| Date: | 2018 |
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
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Інститут фізики конденсованих систем НАН України
2018
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/157049 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Nonlinear dynamics of ferroelectrics with three-well local potential / R. Yevych, M. Medulych, Yu. Vysochanskii // Condensed Matter Physics. — 2018. — Т. 21, № 2. — С. 23001: 1–8. — Бібліогр.: 25 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860016257818951680 |
|---|---|
| author | Yevych, R. Medulych, M. Vysochanskii, Yu. |
| author_facet | Yevych, R. Medulych, M. Vysochanskii, Yu. |
| citation_txt | Nonlinear dynamics of ferroelectrics with three-well local potential / R. Yevych, M. Medulych, Yu. Vysochanskii // Condensed Matter Physics. — 2018. — Т. 21, № 2. — С. 23001: 1–8. — Бібліогр.: 25 назв. — англ. |
| collection | DSpace DC |
| container_title | Condensed Matter Physics |
| description | For Sn₂P₂S₆
ferroelectrics, the appearance of spontaneous polarization is related to stereoactivity of tin cations
and valence fluctuations of phosphorous cations. Here, the continuous phase transition and its behavior under
pressure is determined by thee-well local potential and can be described in an anharmonic quantum oscillator
model. For such a model, the spectrum of pseudospin fluctuations at different temperatures and pressures
has been calculated and compared with the data of Raman spectroscopy. It was revealed that the ferroelectric
lattice instability is related to several low energy optic modes.
Для сегнетоелектрика Sn₂P₂S₆ поява спонтанної поляризацiї пов’язана зi стереоактивнiстю катiонiв олова та валентними флуктуацiями катiонiв фосфору. Неперервний фазовий перехiд та його поведiнка з
тиском визначається локальним триямним потенцiалом i описується в моделi ангармонiчного квантового осцилятора. Для такої моделi розрахованi спектри флуктуацiй псевдоспiна при рiзних температурах i
тисках, якi порiвнюються з даними раманiвської спектроскопiї. Показано, що нестiйкiсть сегнетоелектричної ґратки пов’язана з декiлькома низькоенергетичними оптичними модами.
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| first_indexed | 2025-12-07T16:45:13Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-157049 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1607-324X |
| language | English |
| last_indexed | 2025-12-07T16:45:13Z |
| publishDate | 2018 |
| publisher | Інститут фізики конденсованих систем НАН України |
| record_format | dspace |
| spelling | Yevych, R. Medulych, M. Vysochanskii, Yu. 2019-06-19T13:41:20Z 2019-06-19T13:41:20Z 2018 Nonlinear dynamics of ferroelectrics with three-well local potential / R. Yevych, M. Medulych, Yu. Vysochanskii // Condensed Matter Physics. — 2018. — Т. 21, № 2. — С. 23001: 1–8. — Бібліогр.: 25 назв. — англ. 1607-324X PACS: 05.50.+q, 05.70.Fh, 63.70.+h, 77.84.-s DOI:10.5488/CMP.21.23001 arXiv:1806.09923 https://nasplib.isofts.kiev.ua/handle/123456789/157049 For Sn₂P₂S₆
 ferroelectrics, the appearance of spontaneous polarization is related to stereoactivity of tin cations
 and valence fluctuations of phosphorous cations. Here, the continuous phase transition and its behavior under
 pressure is determined by thee-well local potential and can be described in an anharmonic quantum oscillator
 model. For such a model, the spectrum of pseudospin fluctuations at different temperatures and pressures
 has been calculated and compared with the data of Raman spectroscopy. It was revealed that the ferroelectric
 lattice instability is related to several low energy optic modes. Для сегнетоелектрика Sn₂P₂S₆ поява спонтанної поляризацiї пов’язана зi стереоактивнiстю катiонiв олова та валентними флуктуацiями катiонiв фосфору. Неперервний фазовий перехiд та його поведiнка з
 тиском визначається локальним триямним потенцiалом i описується в моделi ангармонiчного квантового осцилятора. Для такої моделi розрахованi спектри флуктуацiй псевдоспiна при рiзних температурах i
 тисках, якi порiвнюються з даними раманiвської спектроскопiї. Показано, що нестiйкiсть сегнетоелектричної ґратки пов’язана з декiлькома низькоенергетичними оптичними модами. Authors acknowledge helpful discussions with Prof. Ihor V. Stasyuk en Інститут фізики конденсованих систем НАН України Condensed Matter Physics Nonlinear dynamics of ferroelectrics with three-well local potential Нелiнiйна динамiка сегнетоелектрикiв iз триямним потенцiалом Article published earlier |
| spellingShingle | Nonlinear dynamics of ferroelectrics with three-well local potential Yevych, R. Medulych, M. Vysochanskii, Yu. |
| title | Nonlinear dynamics of ferroelectrics with three-well local potential |
| title_alt | Нелiнiйна динамiка сегнетоелектрикiв iз триямним потенцiалом |
| title_full | Nonlinear dynamics of ferroelectrics with three-well local potential |
| title_fullStr | Nonlinear dynamics of ferroelectrics with three-well local potential |
| title_full_unstemmed | Nonlinear dynamics of ferroelectrics with three-well local potential |
| title_short | Nonlinear dynamics of ferroelectrics with three-well local potential |
| title_sort | nonlinear dynamics of ferroelectrics with three-well local potential |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/157049 |
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