A coplanar waveguide permeameter for studying high-frequency properties of soft magnetic materials

被引：77

作者：

Ding, Y ^{[1
]}

Klemmer, TJ ^{[1
]}

Crawford, TM ^{[1
]}

机构：

[1] Seagate Res, Pittsburgh, PA 15222 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 96卷 / 05期

关键词：

D O I：

10.1063/1.1774242

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The high-frequency relative permeability of thin permalloy films was measured in the frequency and time domain using a microwave coplanar waveguide (CPW). Frequency domain measurements using a loop permeameter were performed for comparison. The Fourier transform of the time domain measurement, and the frequency domain measurement on the CPW agree closely, both showing a higher-frequency secondary resonance peak which is not seen with the loop measurement. This resonance likely arises from the lowest-order perpendicular standing spin wave mode of the permalloy film. (C) 2004 American Institute of Physics.

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页码：2969 / 2972

页数：4

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