Unidirectional anisotropy in the spin pumping voltage in yttrium iron garnet/platinum bilayers

被引：53

作者：

Vilela-Leao, L. H. ^{[1
]}

Salvador, C. ^{[1
]}

Azevedo, A. ^{[1
]}

Rezende, S. M. ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 10期

关键词：

garnets; magnetic anisotropy; magnetic thin films; magnetostatics; platinum; spin waves; sputter deposition; yttrium compounds; MAGNETOSTATIC MODES;

D O I：

10.1063/1.3631683

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Detailed measurements of the dc voltage generated in a thin Pt layer deposited on films of yttrium iron garnet (YIG) have been carried out to study the spin pumping effect produced by magnetostatic (MS) modes excited by a microwave field. In relatively thick YIG films the modes are far apart so that one can identify clearly the spin pumping voltage in V-SP produced by each MS mode. We have discovered that when the sputter deposition of the thin Pt layer is made on the YIG film magnetized by a static magnetic field, VSP exhibits a strong unidirectional anisotropy. (C) 2011 American Institute of Physics. [doi:10.1063/1.3631683]

引用

页数：3

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