Spin-wave resonances in exchange-coupled Permalloy/garnet bilayers

被引：7

作者：

Ben Youssef, J. ^{[1
]}

Castel, V. ^{[1
]}

Vukadinovic, N. ^{[2
]}

Labrune, M. ^{[3
]}

机构：

[1] Univ Bretagne Occidentale, Lab Magnetisme Bretagne, CNRS, FRE 3117, F-29285 Brest, France

[2] Dassault Aviat, F-92552 St Cloud, France

[3] Univ Paris 13, LPMTM, Inst Galilee, CNRS,UPR 9001, F-93430 Villetaneuse, France

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 06期

关键词：

bismuth compounds; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; garnets; lutetium compounds; Permalloy; perpendicular magnetic anisotropy; yttrium compounds; BRILLOUIN LIGHT-SCATTERING; FERROMAGNETIC-RESONANCE; THIN-FILMS; MULTILAYERS; LAYERS; DEPENDENCE; TRILAYERS; DYNAMICS; SPECTRA; SYSTEM;

D O I：

10.1063/1.3475646

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Exchange coupling at the interface between a single-crystal garnet film with a perpendicular anisotropy and a Permalloy film with an in-plane anisotropy was investigated both experimentally and theoretically. Wide-band (2-20 GHz) ferromagnetic resonance measurements in parallel configuration reveal spectra with multiple resonance lines (up to four). These data were analyzed by means of a standing spin-wave model extended to account for in-plane/out-of-plane anisotropy bilayers and to include a finite value of the bilinear interfacial exchange coupling J. The field and frequency evolutions of the observed multiple resonance peaks were satisfactorily reproduced using the value J=0.18 +/- 0.05 erg/cm(2). (C) 2010 American Institute of Physics. [doi: 10.1063/1.3475646]

引用

页数：5

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