This article is cited in 4 papers

Ferroelectricity

Phase transitions of KIO$_3$ ferroelectrics in Al$_{2}$O$_{3}$-based nanoporous matrices

A. Yu. Milinskiy^a, S. V. Baryshnikov<sup>ab

a</sup> Blagoveshchensk State Pedagogical University
^b Amur State University, Blagoveshchensk, Amur region

Abstract: Temperature dependences of the linear permittivity $\varepsilon'$ and the third harmonic amplitude $\gamma_{3\omega}$ of composites prepared by introducing ferroelectrics KIO$_3$ into matrices of porous aluminum oxide Al$_{2}$O$_{3}$ with pore sizes of 240 nm were studied. It is found that the IV $\to$ III and III $\to$ II structural transition temperatures of potassium iodide in Al$_{2}$O$_{3}$ pores decrease by 5 K and 24 K, respectively, with respect to bulk KIO$_3$. The measurements of the dielectric properties do not reveal V $\to$ IV and II $\to$ I phase transitions in the composite samples.

Received: 20.09.2017

DOI: 10.21883/FTT.2018.03.45559.273

 English version: Physics of the Solid State, 2018, 60:3, 549–552

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