Size effect on sensitivity to external pressure and caloric effects in TGS: Ceramics and nanocomposites

Михалева, Е. А.; Флёров, И. Н.; Богданов, Е. В.; Бондарев, В. С.; Горев, М. В.; Rysiakiewicz-Pasek, E.

doi:10.1016/j.mtcomm.2020.101463

Автор:

Михалева, Е. А.

Флёров, И. Н.

Богданов, Е. В.

Бондарев, В. С.

Горев, М. В.

Rysiakiewicz-Pasek, E.

Коллективный автор:

Институт инженерной физики и радиоэлектроники

Кафедра теплофизики

Дата:

2020-12

Журнал:

Materials Today Communications

Квартиль журнала в Scopus:

Квартиль журнала в Web of Science:

Библиографическое описание:

Михалева, Е. А. Size effect on sensitivity to external pressure and caloric effects in TGS: Ceramics and nanocomposites [Текст] / Е. А. Михалева, И. Н. Флёров, Е. В. Богданов, В. С. Бондарев, М. В. Горев, E. Rysiakiewicz-Pasek // Materials Today Communications. — 2020. — Т. 25.

Аннотация:

Experimental study of temperature-pressure phase diagrams revealed a slight difference in the sensitivity to hydrostatic pressure of triglycine sulfate (TGS) as a bulk (single crystal, ceramics), and nanoparticles embedded in porous glass (TGS + PG). An analysis of the pressure sensitivity, dT0/p and dT0/dσ, and entropies of the P21 ↔ P21/m phase transition showed the closeness of the barocaloric parameters in various materials under study. Due to the strong anisotropy of thermal expansion, the piezocaloric effect under pressure along the axis c exceeds the barocaloric effect in single-crystal TGS. The reasons for the strong reduction in the electrocaloric effect in the ferroelectric component of nanocomposites compared with a single-crystal are discussed.

Коллекции:

Статьи в научных журналах (эффективный контракт) [5211]

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