Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate
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URI (для ссылок/цитирований):
https://doi.org/10.1016/j.jallcom.2020.155085https://elib.sfu-kras.ru/handle/2311/142595
Автор:
Михалева, Е. А.
Горев, М. В.
Молокеев, М. С.
Карташев, А. В.
Флёров, И. Н.
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Кафедра теплофизики
Базовая кафедра физики твердого тела и нанотехнологий
Дата:
2020-10Журнал:
Journal of Alloys and CompoundsКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q1Библиографическое описание:
Михалева, Е. А. Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate [Текст] / Е. А. Михалева, М. В. Горев, М. С. Молокеев, А. В. Карташев, И. Н. Флёров // Journal of Alloys and Compounds. — 2020. — Т. 839.Аннотация:
The role of anisotropy of the thermal expansion in formation of piezocaloric effect (PCE) near ferroelectric
phase transitions in NH4HSO4 was studied. Strong difference in linear baric coefficients and as a
result in intensive and extensive PCE associated with the different crystallographic axes was found. PCE
giving the main contribution to the barocaloric effect were determined at both phase transitions. Rather strong effect of the lattice dilatation on the tuning of PCE was observed. Comparative analysis of PCE at the phase transitions in different materials showed that NH4HSO4 can be considered as a promising solid-state refrigerant. A hypothetical cooling cycle based on alternate using uniaxial pressure along two axes was considered.