Simulation Study of Bit Patterned Media With Weakly Inclined Anisotropy

Author

Honda, Naoki ; Yamakawa, Kiyoshi ; Ouchi, Kazuhiro

Author_Institution

Electron. & Intell. Syst., Tohoku Inst. of Technol., Sendai, Japan

Volume

46

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1806

Lastpage

1808

Abstract

Recording properties of bit patterned media with weakly inclined anisotropy were studied by simulation. When a shielded planar head was used, a recording system with an areal density of 2.6 Tbit/in² was expected for 30-degree inclined anisotropy media. Relatively large tolerance of around 4% in the anisotropy field and 7 degrees in orientation dispersion as well as write margins in down- and cross-track directions would be expected. Recording densities would be extended to 4 Tbit/in² with additional exchange coupling between the dots. It is expected that bit patterned media with weakly inclined anisotropy is one of promising media for ultra high density recording.

Keywords

disperse systems; magnetic anisotropy; magnetic recording; anisotropy field; areal density; bit patterned media; cross-track direction; down-track direction; exchange coupling; inclined anisotropy media; orientation dispersion; recording properties; recording system; shielded planar head; simulation study; ultra high density recording; Anisotropic magnetoresistance; Magnetic anisotropy; Magnetic heads; Magnetic recording; Magnetostatics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Remanence; Saturation magnetization; Soft magnetic materials; Anisotropy dispersion; bit patterned media; recording simulation; weakly inclined anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2039857

Filename

5467408