Magnetoresistance of NiFe/Ag multilayers: modeling of the effects

Author

Andrieu, O. ; Arroyo, J. ; Gerard, P. ; Dieny, B.

Author_Institution

CEA, Centre d´´Etudes Nucleaires de Grenoble, France

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4734

Lastpage

4736

Abstract

Magnetoresistive Ni₈₁Fe₁₉/Ag coupled multilayers have been obtained in a sputtering machine with a substrate holder rotating over the targets. The multilayers display an in-plane anisotropy perpendicular to the rotation direction. This effect leads to a sensitivity of 0.2%/Oe along the easy axis (0.6%/Oe after short appropriate annealings). A simple analytical model including bilinear, biquadratic and anisotropic energy terms gives good fits of experimental curves if thicknesses distributions and/or anisotropy distributions are taken into account

Keywords

annealing; ferromagnetic materials; iron alloys; magnetic heads; magnetic multilayers; magnetoresistance; magnetoresistive devices; nickel alloys; perpendicular magnetic anisotropy; silver; sputtered coatings; Ni₈₁Fe₁₉-Ag; Ni₈₁Fe₁₉/Ag coupled multilayers; anisotropic energy; anisotropy distribution; annealing; bilinear energy; biquadratic energy; magnetoresistance; magnetoresistive read heads; perpendicular in-plane anisotropy; sputtered films; thickness distribution; Anisotropic magnetoresistance; Annealing; Couplings; Giant magnetoresistance; Magnetic anisotropy; Magnetic field measurement; Magnetic multilayers; Magnetization; Perpendicular magnetic anisotropy; Silver;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539134

Filename

539134