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

Author

Fu, C.M. ; Kao, P.C. ; Hsu, H.S. ; Chao, Y.C. ; Yu, C.C. ; Huang, J.C.A.

Author_Institution

Dept. of Phys., Nat. Kaoshiung Normal Univ., Taiwan

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2667

Lastpage

2669

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.

Keywords

Permalloy; ferromagnetic materials; induced anisotropy (magnetic); magnetic hysteresis; magnetic thin films; magnetisation reversal; Fe-Ni; Mo; Mo stepped surface; Permalloy thin film; anisotropy constant; cubic anisotropy; easy axis; magnetic hysteresis loop; magnetic reversal; phenomenological model; power law; step-induced magnetic anisotropy; temperature dependence; uniaxial anisotropy; Anisotropic magnetoresistance; Chaos; Magnetic anisotropy; Magnetic films; Magnetic hysteresis; Magnetization; Power system modeling; Substrates; Temperature dependence; X-ray scattering;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802232

Filename

1042309