Magnetoelectric coupling in oxygen deficient La0.67Sr0.33MnO3-δ/BaTiO3 composite film

被引：5

作者：

Wang, Jianyuan ^{[1
]}

Han, Zhuokun ^{[1
]}

Bai, Jianying ^{[1
]}

Luo, Bingcheng ^{[1
]}

Chen, Changle ^{[1
]}

机构：

[1] Northwestern Polytech Univ, MOE Key Lab Mat Phys & Chem Extraordinary Condit, Xian 710072, Shaanxi, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2018年 / 534卷

基金：

中国国家自然科学基金;

关键词：

Ferroelectrics; Thin films; Multilayer structure; MAGNETORESISTANCE;

D O I：

10.1016/j.physb.2018.01.051

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of magnetic field on the polarization and dielectric properties in oxygen deficient La0.67Sr0.33MnO3-delta/BaTiO3 composite film are investigated. A temperature dependent polarization variation induced by the magnetic field is observed. Under a magnetic fields of 0.8 T, the enhancement of saturation polarization is remarkable at low temperature region with a maximum changing rate 66.5% occurring at 70 K, whereas it is indistinctive at high temperature. The composite film also exhibits significant magnetodielectric property. The positive changing rate of dielectric constant.e induced by 0.8 T magnetic field reaches the maximum of 80% and 57% at 80 K with the frequency of 1 kHz and 100 kHz, respectively, and the corresponding changing rate of dielectric loss get the negative peak of -27% and -22%. The magneto-induced polarization and dielectric change may result from the charge-based coupling as well as the Maxwell-Wagner effect in this heterojunction.

引用

页码：141 / 144

页数：4

共 25 条

[1] Magnetoelectric switching of exchange bias [J].