Magnetic relaxation of normal-metal (NM)/80NiFe/NM films

被引：51

作者：

Mizukami, S ^{[1
]}

Ando, Y ^{[1
]}

Miyazaki, T ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 239卷 / 1-3期

基金：

日本科学技术振兴机构;

关键词：

ferromagnetic resonance; linewidth; Gilbert damping parameter; permalloy;

D O I：

10.1016/S0304-8853(01)00525-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferromagnetic resonance was measured for Cu 80NiFe(Py), Cu Pt films with various thicknesses of Cu spacer (d(Cu)) in order to clarify the mechanism of the enhancement of Gilbert damping parameter (G) for Pt/Py/Pt films reported previously. The peak-to-peak linewidth (DeltaH(PP)) for the Cu/Py/Cu/Pt film was very large at d(Cu) = 0 Angstrom and decreased gradually with increasing d(Cu). The out-of-plane angular dependence of DeltaH(PP) for Cu/Py/Cu/Pt films was measured and analyzed using Landau-Lifshitz-Gilbert equation, by taking into account the magnetic inhomogeneities, The value of G obtained from analysis of the Cu/Py/Cu/Pt film was about twice larger than that for Cu/Py/Cu film even at d(Cu) = 100 Angstrom and decreased gradually as d(Cu) increased. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：42 / 44

页数：3

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