Foldover ferromagnetic resonance and damping in permalloy microstrips

被引：64

作者：

Gui, Y. S. ^{[1
]}

Wirthmann, A. ^{[1
]}

Hu, C. -M. ^{[1
]}

机构：

[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N6, Canada

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

damping; ferromagnetic materials; ferromagnetic resonance; magnetisation; microwave materials; Permalloy; photoconductivity; YTTRIUM-IRON-GARNET; SPIN-WAVE INSTABILITY; CRYSTAL YIG-FILMS; FERRIMAGNETIC RESONANCE; RELAXATION PROCESSES; THIN-FILMS; MICROWAVE; MAGNETIZATION; FERRITES; SPHERES;

D O I：

10.1103/PhysRevB.80.184422

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the foldover ferromagnetic resonance in ferromagnetic permalloy (Py) microstrips by microwave photovoltage and photoresistance techniques. We have found that the linewidth of the nonlinear ferromagnetic resonance is strongly dependent on the precession angle of magnetization. Therefore, we have revised the Anderson-Suhl instability, which enables us to quantitatively describe the foldover effect in Py microstrips. The calculation from this proposed model shows excellent agreement with experimental data.

引用

页数：13

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