Structural Control of Domain Wall Depinning Fields in Nanostructured Fe Crossbar Patterns

Author

Takashima, Takeshi ; Ito, Kei ; Noda, Kentaro ; Tanaka, T. ; Matsuyama, Kimihide

Author_Institution

Grad. Sch. of Inf. Sci. & Electr. Eng., Kyushu Univ., Fukuoka, Japan

Volume

47

Issue

10

fYear

2011

Firstpage

2522

Lastpage

2524

Abstract

Domain wall (DW) pinning properties in Fe crossbar junctions with various nominal bar widths (100-380 nm) and film thicknesses (10-30 nm) are studied by magnetic force microscopy observation and micromagnetic simulation. The measured DW depinning fields present the marked bar width dependence as predicted from micromagnetic simulations. Simulation results suggest that the transverse DW is stabilized at the cross junction, and the depinning process is triggered by nonuniform magnetization rotation, taking the temporal buckling configuration.

Keywords

iron; magnetic domain walls; magnetic force microscopy; magnetisation; Fe; domain wall depinning fields; magnetic force microscopy; magnetization rotation; micromagnetic simulation; nanostructured crossbar; size 10 nm to 30 nm; size 100 nm to 380 nm; structural property; temporal buckling configuration; Anisotropic magnetoresistance; Demagnetization; Iron; Junctions; Magnetic domain walls; Magnetization; Micromagnetics; Magnetic domains; magnetic force microscopy; micromagnetic simulation; nanostructured Fe crossbar;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2011.2146760

Filename

6028153