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Thermal, structural, optical, dielectric and barocaloric properties at ferroelastic phase transition in trigonal (NH4)2SnF6: A new look at the old compound
Автор | Flerov, Igor N. | |
Автор | Kartashev, Andrey V | |
Автор | Gorev, Mikhail V. | |
Автор | Bogdanov, Evgeniy V. | |
Автор | Mel’Nikova, Svetlana V. | |
Автор | Molokeev, Maxim S. | |
Автор | Pogoreltsev, Evgeniy I. | |
Автор | Laptash, Natalia M. | |
Дата внесения | 2017-06-16T10:30:32Z | |
Дата, когда ресурс стал доступен | 2017-06-16T10:30:32Z | |
Дата публикации | 2016-01 | |
Библиографическое описание | Flerov, Igor N. Thermal, structural, optical, dielectric and barocaloric properties at ferroelastic phase transition in trigonal (NH4)2SnF6: A new look at the old compound [Текст] / Igor N. Flerov, Andrey V Kartashev, Mikhail V. Gorev, Evgeniy V. Bogdanov, Svetlana V. Mel’Nikova, Maxim S. Molokeev, Evgeniy I. Pogoreltsev, Natalia M. Laptash // Journal of Fluorine Chemistry. — 2016. — Т. 183. — С. 1-9 | |
ISSN | 00221139 | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/33175 | |
Описание | Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала. | |
Аннотация | Structural phase transition P-3m1 ↔ P-1 of the first order and nonferroelectric nature was found in (NH4)2SnF6 at about 110 K in the process of thermal, optical, dielectric and X-ray studies. Order-disorder transformation is accompanied by large changes of entropy (ΔS0 = 16.4 J/mol•K) and volume (ΔV0/V ≈ 1 %). The structural model associated with three orientations of NH4 tetrahedra in P-3m1 phase and their complete ordering in P-1 phase was suggested with the entropy change (ΔS0 = 18.3 J/mol•K) close to the experimental value. A good agreement between baric coefficients measured in a direct way (dT0/dp = -157 K/GPa) and evaluated using entropy and volume changes at phase transition (- 170 K/GPa) was found. Barocaloric effects in (NH4)2SnF6 are comparable with those of known solid state refrigerants and are characterised by a low-pressure need for realising their maximum values. | |
Ссылка на другой сайт | http://www.sciencedirect.com/science/article/pii/S0022113915300245 | |
Тема | Fluorides | |
Тема | Structural disorder | |
Тема | Phase transitions | |
Тема | Entropy | |
Тема | Barocaloric effect | |
Название | Thermal, structural, optical, dielectric and barocaloric properties at ferroelastic phase transition in trigonal (NH4)2SnF6: A new look at the old compound | |
Тип | Journal Article | |
Тип | Published Journal Article | |
Страницы | 1-9 | |
ГРНТИ | 29.19.09 | |
Дата обновления | 2017-06-16T10:30:32Z | |
DOI | 10.1016/j.jfluchem.2015.12.010 | |
Институт | Институт инженерной физики и радиоэлектроники | |
Подразделение | Кафедра теплофизики | |
Журнал | Journal of Fluorine Chemistry | |
Квартиль журнала в Scopus | Q2 | |
Квартиль журнала в Web of Science | Q2 |