Temperature variation of step-induced magnetic anisotropy in permalloy thin film grown on Mo stepped surface

Chao Ming Fu*, P. C. Kao, H. S. Hsu, Y. C. Chao, C. C. Yu, J. C.A. Huang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

The influence of the temperature on the behavior of the step-induced magnetic anisotropy of the permalloy film is studied. The characteristic hysteresis loop, composed of the linear part and two smaller loops, is varied systematically with increasing temperature, toward a simple loop typical for easy axis. The temperature dependent anisotropy constants, calculated from the magnetic hysteresis loops, can be described by the l(l + 1)/2 power law of the phenomenological model. The mechanism underlay may be associated with the completion of the energy of uniaxial anisotropy and cubic anisotropy for the magnetic reversal at the step edges and the terraces.

Original languageEnglish
Pages (from-to)2667-2669
Number of pages3
JournalIEEE Transactions on Magnetics
Volume38
Issue number5 I
DOIs
Publication statusPublished - 2002 Sep
Externally publishedYes
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: 2002 Apr 282002 May 2

Keywords

  • Permalloy
  • Step-induced magnetic anisotropy
  • Ultrathin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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