The effect of annealing atmosphere on magnetoelectric coupling of the La0.7Sr0.3MnO3/BaTiO3 layered heterostructure

被引：9
作者：
Li, Tingxian [1 ]
Wang, Hongwei [2 ]
Ju, Lin [1 ]
Tang, Zhenjie [1 ]
Ma, Dongwei [1 ]
Li, Kuoshe [3 ]
机构：
[1] Anyang Normal Univ, Coll Phys & Elect Engn, Anyang 455002, Peoples R China
[2] Anyang Normal Univ, Sch Math & Stat, Anyang 455002, Peoples R China
[3] Natl Engn Res Cent Rare Earth Mat, Beijing 100088, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2015年 / 475卷
基金：
中国国家自然科学基金;
关键词：
Multiferroic materials; Pulsed laser deposition; Annealing; Magnetoelectric coupling; THIN-FILMS;
D O I：
10.1016/j.physb.2015.06.019
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The epitaxial La0.7Sr0.3MnO3/BaTiO3 (LSMO/BTO) layered heterostructure was grown on (001) oriented LaAlO3 single-ci:ystal substrate by pulsed laser deposition. Our results showed that the in-situ annealing process in oxygen made the LSMO/BTO interface possess higher oxygen content than that of the one annealing in vacuum, which leaded to the LSMO film presented higher magnetic permeability and higher saturated magnetization. The P-E hystersis loop only could be detected in the sample annealing in oxygen. The ME voltage coefficient of the LSMO/BTO heterostructure annealing in oxygen was higher than that of the one annealing in vacuum, which suggested a more effective ME coupling. It was a combined effect of the two main ME coupling mechanisms, including strain mediation, and polarized carrier mediation. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：32 / 34
页数：3
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