Imaging the magnetization reversal of step-induced uniaxial magnetic anisotropy in vicinal epitaxial La0.7Sr0.3MnO3 films

被引：17

作者：

Perna, P. ^{[1
,2
,3
]}

Mechin, L. ^{[1
,2
]}

Saib, M. ^{[1
,2
]}

Camarero, J. ^{[3
,4
,5
]}

Flament, S. ^{[1
,2
]}

机构：

[1] ENSICAEN, CNRS, GREYC, UMR6072, F-14050 Caen, France

[2] Univ Caen Basse Normandie, F-14050 Caen, France

[3] IMDEA Nanociencia, Madrid 28049, Spain

[4] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain

[5] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

关键词：

LA0.67SR0.33MNO3; THIN-FILMS; COLOSSAL MAGNETORESISTANCE; MANGANESE PEROVSKITES; MANGANITES; STRAIN; SURFACE; CA;

D O I：

10.1088/1367-2630/12/10/103033

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetization reversal of La0.7Sr0.3MnO3 (LSMO) epitaxial films deposited on 10 degrees vicinal SrTiO3(001) substrates has been investigated at room temperature by using longitudinal magneto-optical Kerr microscopy. In the case when the magnetic field is applied parallel to the substrate steps, magnetization reversal proceeds first by the nucleation of magnetic domains with well-defined magnetic domain walls (DWs) oriented parallel to the step direction and then by DW propagation. No magnetic domains are found in the case when the magnetic field is applied perpendicular to the steps, in which case magnetization reversal proceeds by coherent rotation. Our results provide a direct visualization of the step-induced uniaxial magnetic anisotropy in half-metallic systems and for LSMO thickness up to 70 nm.

引用

页数：9

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