Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8161217 | Physica B: Condensed Matter | 2018 | 4 Pages |
Abstract
The effect of magnetic field on the polarization and dielectric properties in oxygen deficient La0.67Sr0.33MnO3-δ/BaTiO3 composite film are investigated. A temperature dependent polarization variation induced by the magnetic field is observed. Under a magnetic fields of 0.8â¯T, the enhancement of saturation polarization is remarkable at low temperature region with a maximum changing rate 66.5% occurring at 70â¯K, whereas it is indistinctive at high temperature. The composite film also exhibits significant magnetodielectric property. The positive changing rate of dielectric constant ηε induced by 0.8â¯T magnetic field reaches the maximum of 80% and 57% at 80â¯K with the frequency of 1â¯kHz and 100â¯kHz, respectively, and the corresponding changing rate of dielectric loss get the negative peak of â27% and â22%. The magneto-induced polarization and dielectric change may result from the charge-based coupling as well as the Maxwell-Wagner effect in this heterojunction.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Jianyuan Wang, Zhuokun Han, Jianying Bai, Bingcheng Luo, Changle Chen,