Effect of a restricted geometry on thermal and dielectric properties of NH4HSO4 ferroelectric

Михалева, Е. А.; Флеров, И. Н.; Карташев, А. В.; Горев, М. В.; Богданов, Е. В.; Бондарев, В. С.; Коротков, Л. Н.; Rysiakiewicz-Pasek, E.

doi:10.1080/00150193.2017.1350436

Author:

Михалева, Е. А.

Флеров, И. Н.

Карташев, А. В.

Горев, М. В.

Богданов, Е. В.

Бондарев, В. С.

Коротков, Л. Н.

Rysiakiewicz-Pasek, E.

Corporate Contributor:

Институт инженерной физики и радиоэлектроники

Базовая кафедра физики твердого тела и нанотехнологий

Кафедра теплофизики

Date:

2017-09

Journal Name:

Ferroelectrics

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Journal Quartile in Web of Science:

Bibliographic Citation:

Михалева, Е. А. Effect of a restricted geometry on thermal and dielectric properties of NH4HSO4 ferroelectric [Текст] / Е. А. Михалева, И. Н. Флеров, А. В. Карташев, М. В. Горев, Е. В. Богданов, В. С. Бондарев, Л. Н. Коротков, E. Rysiakiewicz-Pasek // Ferroelectrics. — 2017. — Т. 513. — С. 44-50

Abstract:

Heat capacity, thermal dilatation, sensitivity to pressure and permittivity of NH4HSO4 embedded into glass matrices with a pore size of 320nm and 46nm were studied. Large difference in the thermal expansion of both glass and ferroelectric leads to a “clamped” state of NH4HSO4 in nanocomposites and to the phase transition temperatures change. The restricted geometry does not effect on the order of successive transformations in NH4HSO4 but is accompanied by a signiﬁcant reduction in entropy of phase transitions. The behavior of DTA-signal and permittivity show the expansion of the temperature range of the ferroelectric phase under hydrostatic pressure.

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