Controlling the switching field in nanomagnets by means of domain-engineered antiferromagnets

被引：9

作者：

Folven, E. ^{[1
]}

Linder, J. ^{[2
]}

Gomonay, O. V. ^{[3
]}

Scholl, A. ^{[4
]}

Doran, A. ^{[4
]}

Young, A. T. ^{[4
]}

Retterer, S. T. ^{[5
]}

Malik, V. K. ^{[6
]}

Tybell, T. ^{[1
]}

Takamura, Y. ^{[6
]}

Grepstad, J. K. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Elect & Telecommun, NO-7491 Trondheim, Norway

[2] Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway

[3] Natl Tech Univ Ukraine, Inst Phys & Technol, UA-03056 Kiev, Ukraine

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[5] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[6] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 09期

基金：

美国国家科学基金会;

关键词：

EXCHANGE BIAS; THIN-FILMS; NANOSTRUCTURES; MAGNETIZATION; ANISOTROPY; ROTATION;

D O I：

10.1103/PhysRevB.92.094421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using soft x-ray spectromicroscopy, we investigate the magnetic domain structure in embedded nanomagnets defined in La0.7Sr0.3MnO3 thin films and LaFeO3/La0.7Sr0.3MnO3 bilayers. We find that shape-controlled antiferromagnetic domain states give rise to a significant reduction of the switching field of the rectangular nanomagnets. This is discussed within the framework of competition between an intrinsic spin-flop coupling and shape anisotropy. The data demonstrates that shape effects in antiferromagnets may be used to control the magnetic properties in nanomagnets.

引用

页数：5

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