Magnetization reversal in submicron ferromagnetic dots and antidots arrays

Author

Otani, Yoshichika ; Kim, Seung Gu ; Kohda, Tohru ; Fukamichi, Kazuaki ; Kitakami, Osamu ; Shimada, Yutaka

Author_Institution

Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1090

Lastpage

1092

Abstract

Arrays of submicron Co rectangular dots with the aspect ratio ranging from 1 to 4 and antidots with the aspect ratio 4 were prepared by a high resolution lithography technique. Magnetic force microscope observations and magnetization measurements show that the magnetic state of square Co dots are well controlled by the shape anisotropy, whereas the antidots exhibit peculiar stripe domains at the remanent state. The direction of the stripes are well determined by the previously applied field direction

Keywords

cobalt; ferromagnetic materials; lithography; magnetic anisotropy; magnetic domains; magnetic force microscopy; magnetic particles; magnetisation reversal; remanence; Co; applied field direction; aspect ratio; high resolution lithography technique; magnetic force microscope observations; magnetization measurements; magnetization reversal; remanent state; shape anisotropy; stripe domains; submicron Co rectangular dots; submicron ferromagnetic antidots arrays; submicron ferromagnetic dots; Force measurement; Lithography; Magnetic anisotropy; Magnetic field measurement; Magnetic force microscopy; Magnetic forces; Magnetization reversal; Perpendicular magnetic anisotropy; Shape control; Shape measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706366

Filename

706366