Frequency-selective control of ferromagnetic resonance linewidth in magnetic multilayers

被引：8
作者：
Schaefer, S. [1 ]
Pachauri, N. [1 ]
Mewes, C. K. A. [1 ]
Mewes, T. [1 ]
Kaiser, C. [2 ]
Leng, Q. [2 ]
Pakala, M. [2 ]
机构：
[1] Univ Alabama, Dept Phys & Astron, MINT Ctr, Tuscaloosa, AL 35487 USA
[2] Western Digital, Fremont, CA 94539 USA
来源：
APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 03期
关键词：
SCATTERING; ROUGHNESS; FUTURE; METALS; FILMS;
D O I：
10.1063/1.3678025
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on a frequency-specific linewidth broadening of the ferromagnetic resonance (FMR) mode of a NiFe free layer within a magnetic multilayer stack. The FMR studies reveal a significant broadening of the FMR linewidth of the free layer at frequencies where this resonance is degenerate with FMR modes stemming from other layers within the multilayer stack. By pinning part of the magnetic multilayer to an antiferromagnet, we tailor a ferromagnetic linewidth behavior that is anisotropic for a specific frequency. (C) 2012 American Institute of Physics. [doi:10.1063/1.3678025]
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页数：3
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