Influence of compressive strain on oxygen distribution in La0.7Ba0.3MnO3 thin films

被引：12

作者：

Li, Bing ^{[1
]}

Yang, Lei ^{[1
]}

Tian, JinZeng ^{[1
]}

Wang, XiaoPing ^{[1
]}

Zhu, Hong ^{[1
]}

Endo, Tamio ^{[2
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

[2] Mie Univ, Grad Sch Engn, Tsu, Mie 5148507, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期

关键词：

GIANT MAGNETORESISTANCE; MAGNETIC-PROPERTIES; MANGANESE OXIDE; CATION DISORDER; PHASE-DIAGRAM; LA0.7CA0.3MNO3; MANGANITES; RESISTIVITY; STOICHIOMETRY; TEMPERATURE;

D O I：

10.1063/1.3573494

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of annealing ambient on the structural and transport properties of epitaxial La0.7Ba0.3MnO3 films suffering large compressive strain on LaAlO3 substrates (LBMO/LAO) have been investigated. Independent of oxygen or argon ambient, a high temperature (900 degrees C) post-annealing process leads to a c-axis contraction, which can be attributed to the oxygen transfer from the in-plane to the out-of-plane direction. Meanwhile, the transport properties are similar with each other for both the Ar-annealed and O-2-annealed films. The comparison of the ambient annealing effects between the highly strained LBMO/LAO films and negligibly strained LBMO films on SrTiO3 substrates indicates that a large in-plane compressive strain favors decreasing oxygen deficiency in the films, especially in the ab-plane. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3573494]

引用

页数：5

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