Size Effect in Nanocomposites Based on Molecular Ferroelectric Diisopropylammonium Bromide

被引：9

作者：

Baryshnikov, S., V ^{[1
,2
]}

Milinskii, A. Yu ^{[1
]}

Charnaya, E., V ^{[3
]}

Egorova, I., V ^{[1
]}

机构：

[1] Blagoveshchensk State Pedag Univ, Blagoveshchensk 675000, Russia

[2] Amur State Univ, Blagoveshchensk 675027, Russia

[3] St Petersburg State Univ, St Petersburg 194034, Russia

来源：

PHYSICS OF THE SOLID STATE | 2019年 / 61卷 / 02期

关键词：

PHASE-TRANSITIONS; TEMPERATURE; CHLORIDE; SALT;

D O I：

10.1134/S1063783419020057

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the results of studies of the dielectric properties of nanocomposites based on Al2O3 oxide films with a pore size of 330 and 60 nm with particles of an organic ferroelectric diisopropylammonium bromide (C6H16BrN, DIPAB) introduced into the pores, aimed at determining the size dependences of phase transition parameters. A shift in the phase transition to low temperatures and diffusion of the transition are found, which become more significant for smaller pores. A broadening of the temperature hysteresis of the dielectric constant of nanocomposites during the phase transition was also observed. The decrease in the phase transition temperature in nanocomposites with DIPAB nanoparticles is consistent with theoretical models of the size effects on the structural phase transition.

引用

页码：134 / 138

页数：5

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