Effect of Magnetic Tunneling Junction Sensor Size on Ferromagnetic Interlayer Coupling

Author

Shuxia Wang ; GuangLi Liu ; Ching Tsang ; Weidong Li ; Simon Liao ; Yimin Hsu ; Chando Park ; Zheng Gao

Author_Institution

Hitachi Global Storage Technol., San Jose, CA, USA

Volume

47

Issue

10

fYear

2011

Firstpage

3415

Lastpage

3417

Abstract

In this paper, we present experimental results of the ferromagnetic interlayer coupling effect in magnetic tunnel junction devices. This investigation is focused on the sensor size dependency of the ferromagnetic interlayer coupling. The geometry-dependent magnetostatic edge-coupling contribution is estimated by micromagnetic simulation and then subtracted from the net coupling field in order to obtain the correlation between ferromagnetic interlayer coupling and the sensor size.

Keywords

RKKY interaction; boron alloys; cobalt alloys; ferromagnetic materials; iridium alloys; iron alloys; magnesium compounds; magnetic epitaxial layers; magnetic sensors; magnetic tunnelling; manganese alloys; micromagnetics; ruthenium; IrMn-CoFe-Ru-CoFeB-MgO-CoFe; ferromagnetic interlayer coupling effect; geometry-dependent magnetostatic edge-coupling contribution; magnetic tunnel junction devices; magnetic tunneling junction sensor size effect; micromagnetic simulation; net coupling field; sensor size dependency; Couplings; Junctions; Magnetic domains; Magnetic moments; Magnetic tunneling; Magnetostatics; Micromagnetics; Ferromagnetic interlayer coupling; magnetic tunnel junctions (MTJs); micromagnetic modeling;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2147297

Filename

6028189