Magnetic anisotropy and anomalous transitions in TbMnO3 thin films

被引：21

作者：

Cui, Yimin ^{[1
]}

Tian, Yufeng ^{[2
]}

Shan, Aixian ^{[3
]}

Chen, Chinping ^{[3
]}

Wang, Rongming ^{[1
]}

机构：

[1] Beihang Univ, Dept Phys, Minist Educ, Key Lab Micronano Measurement Manipulat & Phys, Beijing 100191, Peoples R China

[2] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[3] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 12期

基金：

中国国家自然科学基金;

关键词：

EPITAXIAL FE FILMS; MAGNETOELASTIC CONSTANTS; CO FILMS; TEMPERATURE; PHASE;

D O I：

10.1063/1.4754544

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

TbMnO3 thin films with different crystallographic orientations were deposited epitaxially on LaAlO3 [100] and SrTiO3 [100] single crystal substrates by using pulsed laser deposition. Magnetization measurements were performed along the [110], [-110], and [001] directions of the films. Obvious magnetic anisotropy and low temperature ferromagnetism were found. Transitions at T similar to 10, 32, 120, and 125K along different directions are observed. The susceptibility anomalies, remarkably anisotropic, are discussed on the frame of the domain wall and strain-induced distortion. Particularly, the lattice mismatch and the anisotropic thermal expansion between the films and substrates are likely responsible for the distortion behaviors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4754544]

引用

页数：5

共 30 条

[1] Temperature and composition dependent structural investigation of the defect perovskite series Sr1-xTi1-2xNb2xO3, 0 ≤ x ≤ 0.2 [J].