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Dynamic anisotropy of thin Permalloy films measured by use of angle-resolved pulsed inductive microwave magnetometry

Published

Author(s)

Michael L. Schneider, Anthony B. Kos, Thomas J. Silva

Abstract

In this study, angle-resolved pulsed inductive microwave magnetometry is used to investigate the symmetry of the dynamic anisotropy of thin Permalloy films. We measured the dynamic anisotropy field as a function of angle between the easy axis and the applied bias field. We found that, in addition to the expected uniaxial anisotropy, there is a rotatable component of anisotropy. This component of the anisotropy is present only during the dynamics measurements and is attributed to surface effects in the thin films. However, the native oxide layer is not the cause of the rotatable anisotropy components in these films.
Citation
Applied Physics Letters
Volume
86
Issue
202503

Keywords

Anisotropy, magnetodynamics, Permalloy
Created May 11, 2005, Updated February 19, 2017