Tunable enhancement of ferroelectric properties in BaxSr1-xTiO3/La0.7Sr0.3MgO3 heterostructures observed by means of second harmonic generation technique

被引：2
作者：
Buryakov, A. [1 ]
Ivanov, M. S. [1 ]
Mishina, E. D. [1 ]
机构：
[1] Moscow Inst Radio Engn Elect & Automat, Moscow 117454, Russia
来源：
SOLID STATE COMMUNICATIONS | 2015年 / 206卷
基金：
俄罗斯基础研究基金会;
关键词：
THIN-FILMS;
D O I：
10.1016/j.ssc.2015.01.015
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
This work is devoted to research an influence of Ba cation concentration on polarization properties of ferroelectric layer which is included in bilayer structures as functional stratum. We haw created bilayer nanocomposites consisting of a ferroelectric Ba(x)Sr(1-x)TiO3 (BST) layer and a ferromagnetic La0.7Sr0.3MnO3 (LSMO) layer with various concentrations of Ba. The epitaxial heterostructure BST/LSMO was fabiicated using metal-organic aerosol deposition technique (MAD) on a single-crystal substrate SrTiO3 (001). The structural parameters of the BST/LSMO were defined by X-ray diffraction analysis. The in-plane ferroelectric polarization, measured by means of optical second harmonic generation (SHG) method, was shown to be strongly dependent on the Ba concentration. We consider this effect as structural distortion at room temperatures which close to the structural phase transition and altering the Ba concentration affects the vicinity to the phase transition point. (C) 2015 Elsevier Ltd. All rights reserved
引用
收藏
页码：51 / 55
页数：5
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