Enhanced magnetism in epitaxial SrRuO3 thin films

被引：67

作者：

Grutter, Alexander ^{[1
,2
]}

Wong, Franklin ^{[1
]}

Arenholz, Elke ^{[3
]}

Liberati, Marco ^{[3
]}

Vailionis, Arturas ^{[4
]}

Suzuki, Yuri ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

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

[4] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 08期

关键词：

ferromagnetic materials; internal stresses; magnetic epitaxial layers; magnetic moments; magnetisation; magnetomechanical effects; strontium compounds;

D O I：

10.1063/1.3327512

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We observed enhanced magnetization in epitaxial SrRuO3 thin films compared to previously reported bulk and thin film values. The enhancement is strongly dependent on the orientation of the lattice distortions imposed by (001), (110), and (111) oriented SrTiO3 substrates. A larger magnetization enhancement for coherently strained SrRuO3 films on (111) and (110) oriented SrTiO3 compared to films on (001) SrTiO3 confirms the importance of the strain state in determining the magnetic ground state of the Ru ion. Moreover, SrRuO3 films on (111) SrTiO3 exhibit enhanced moments as high as 3.4 mu(B)/Ru ion, suggesting the stabilization of a high-spin Ru4+ state.

引用

页数：3

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