Competing interactions at the interface between ferromagnetic oxides revealed by spin-polarized neutron reflectometry

被引：27

作者：

Kim, J. -H. ^{[1
]}

Vrejoiu, I. ^{[2
]}

Khaydukov, Y. ^{[1
,5
]}

Keller, T. ^{[1
,5
]}

Stahn, J. ^{[3
]}

Ruehm, A. ^{[4
,5
]}

Satapathy, D. K. ^{[6
,7
]}

Hinkov, V. ^{[1
,8
]}

Keimer, B. ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany

[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] Max Planck Inst Intelligente Syst, D-70569 Stuttgart, Germany

[5] Forsch Neutronenquelle Heinz Maier Leibnitz FRM I, D-85748 Garching, Germany

[6] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

[7] Fribourg Ctr Nanomat, CH-1700 Fribourg, Switzerland

[8] Univ British Columbia, Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 18期

关键词：

MAGNETIZATION; TRANSITION; SRRUO3;

D O I：

10.1103/PhysRevB.86.180402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the magnetization profiles in superlattices composed of the two ferromagnets La0.7Sr0.3MnO3 and SrRuO3 using spin-polarized neutron reflectometry. In combination with magnetometry, the neutron data indicate a noncollinear spin configuration where orientation of the Ru moments changes from in plane at the interface to out of plane deep inside the SrRuO3 layers. The spin structure originates in a competition between antiferromagnetic exchange interactions of Mn and Ru moments across the interface, and the magnetocrystalline anisotropy of the Ru moments, and it is closely related to the "exchange spring" structures previously observed in multilayers composed of ferromagnetic elements and alloys.

引用

页数：5

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