Orbital magnetic moments in SrRuO3 epitaxial thin films with interfacially controlled magnetic anisotropy

被引：18
作者：
Kan, Daisuke [1 ]
Mizumaki, Masaichiro [2 ]
Nishimura, Tomoe [1 ]
Shimakawa, Yuichi [1 ,3 ]
机构：
[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan
[2] Japan Synchrotron Radiat Res Inst, SPring 8, Sayo, Hyogo 6795198, Japan
[3] Integrated Res Consortium Chem Sci, Uji, Kyoto 6110011, Japan
来源：
PHYSICAL REVIEW B | 2016年 / 94卷 / 21期
关键词：
RAY CIRCULAR-DICHROISM; TRANSITION-METAL OXIDE; PERPENDICULAR-ANISOTROPY; PEROVSKITES; MULTILAYERS;
D O I：
10.1103/PhysRevB.94.214420
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) spectroscopy, we evaluated the orbital magnetic moments of itinerant ferromagnet SrRuO3 (SRO) epitaxial thin films with interfacially controlled magnetic anisotropy. We found that the orbital moment is closely correlated with the SRO's magnetic anisotropy, which can be controlled by interfacially engineering the RuO6 octahedral rotations. For the monoclinic film with magnetization along the direction 45 degrees from the out-of-plane direction, the orbital moment is approximate to-0.1 mu(B)/Ru along the magnetic easy axis direction and is aligned antiparallel to the direction of the spin magnetic moments. For the tetragonal film with in-plane magnetization, on the other hand, the out-of-plane component of the orbital moment is as small as approximate to-0.04 mu(B)/Ru, accounting for the film's in-plane magnetic anisotropy. Our results highlight that the magnetic anisotropy of SRO can be controlled by engineering the orbital magnetic moment through the octahedral distortions.
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页数：5
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