A detached pole tip design of perpendicular write heads for high data-rate recording

Author

Bai, Daniel Z. ; Zhu, Jian-Gang

Author_Institution

Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2240

Lastpage

2242

Abstract

Single pole perpendicular recording heads with track width below 100 nm have been examined using three-dimensional dynamic micromagnetic modeling, with focus on the dynamic field reversal and the head relaxation process. A head laminated through the thickness with the pole tip detached from the yoke shows very fast field response to the driving current, well repeatable domain configurations, instantaneous field relaxation after writing as well as robust near-zero remanent field.

Keywords

magnetic domains; magnetic heads; magnetic relaxation; magnetisation reversal; perpendicular magnetic recording; remanence; 100 nm; detached pole tip design; driving current; dynamic field reversal; head relaxation process; high data-rate recording; instantaneous field relaxation; perpendicular write heads; robust near-zero remanent field; single pole perpendicular recording heads; thickness; three-dimensional dynamic micromagnetic modeling; track width; very fast field response; well repeatable domain configurations; writing; yoke; Equations; Geometry; Lamination; Magnetic heads; Magnetization; Micromagnetics; Perpendicular magnetic recording; Remanence; Robustness; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802782

Filename

1042150