Current distribution effect on micro-track profiles in spin valve devices

Author

Zhu, Ningjia ; Zhang, Jing ; Lederman, Marcos ; Rana, Amritpal ; Chen, Wenjie

Author_Institution

Read-Rite Corp., Fremont, CA, USA

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3775

Lastpage

3777

Abstract

The methodology of the micromagnetic theory for modeling micro-track profiles is discussed. Consistent results are obtained from modeling and experiments. Then, this theory is used to investigate the micro-track profile behavior in different current distributions at sensor junctions with different permanent magnet (PM) Mrt (remanent magnetization×thickness). It is found that a lower Mrt can lead to different microtrack profiles in different current distributions. With the PM Mrt there is less current distribution effect. Thus, ones could use this approach indirectly to estimate the PM field in sensors, which is of importance in spin valve head design

Keywords

current distribution; magnetic heads; magnetic sensors; permanent magnets; remanence; spin valves; current distribution; micro-track profile; micromagnetic model; permanent magnet; recording head; remanent magnetization; sensor; spin valve device; Current distribution; Magnetic anisotropy; Magnetic heads; Magnetic sensors; Magnetization; Magnetosphere; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Spin valves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800661

Filename

800661