Electrically Tunable Susceptibility of Synthetic Antiferromagnet Lines

Author

An, Na ; Jander, Albrecht

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ.

Volume

42

Issue

10

fYear

2006

Firstpage

3383

Lastpage

3385

Abstract

A current-carrying synthetic antiferromagnet (SAF) structure, which consists of two ferromagnetic layers antiferromagnetically coupled to one another through an exchange coupling layer, is being studied. Using typical values of an Ni₈₀Fe₂₀ SAF structure and aided by numerical calculation, we predict that its effective susceptibility can be varied by current. The maximum change in susceptibility and the corresponding critical current are expressed in analytical forms. An electrically tunable thin-film magnetic core can find wide applications in magnetic sensors and tunable magnetic components

Keywords

antiferromagnetic materials; critical currents; ferromagnetic materials; iron alloys; magnetic cores; magnetic susceptibility; magnetic thin films; nickel alloys; Ni₈₀Fe₂₀; SAF structure; critical current; electrically tunable susceptibility; exchange coupling layer; ferromagnetic layers; magnetic sensors; synthetic antiferromagnet lines; synthetic antiferromagnet structure; thin-film magnetic core; tunable magnetic components; Antiferromagnetic materials; Couplings; Magnetic anisotropy; Magnetic cores; Magnetic devices; Magnetic fields; Magnetic films; Perpendicular magnetic anisotropy; Thin film inductors; Tunable circuits and devices; Magnetic permeability; magnetic susceptibility; magnetic thin films; tunability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.879084

Filename

1704634