Investigation of the magnetic properties of insulating thin films using the longitudinal spin Seebeck effect

被引：19

作者：

Kehlberger, A. ^{[1
]}

Jakob, G. ^{[1
]}

Onbasli, M. C. ^{[2
]}

Kim, D. H. ^{[2
]}

Ross, C. A. ^{[2
]}

Klaeui, M. ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.4864252

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The longitudinal spin Seebeck effect is used as a detector for the magnetic properties and switching characteristics of magnetic thin insulating films. We use a 300 nm and a 20 nm thick Yttrium Iron Garnet (YIG, Y3Fe5O12) film prepared by pulsed laser deposition and afterwards coated by platinum for the detection of the thermally excited magnons by the inverse spin Hall effect. The inverse spin Hall signals reveal a magnetic uniaxial anisotropy along the direction of the platinum stripe in the thicker film. For the thin film we find a more isotropic behavior, which is complementarily observed using the magnetoresistance occurring at the platinum/YIG interface. We explain our results on the basis of x-ray diffraction data, which reveal a miscut of the substrate and film surface and an expansion of the YIG lattice. Both findings favor a growth-induced magnetic anisotropy that we observe. (C) 2014 AIP Publishing LLC.

引用

页数：3

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