3-D topology optimization of single-pole-type head by using design sensitivity analysis

Author

Okamoto, Y. ; Akiyama, K. ; Takahashi, N.

Author_Institution

Dept. of Electr. & Electron. Eng., Okayama Univ.

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1087

Lastpage

1090

Abstract

It is necessary to develop a write head having a large recording field and small stray field in adjacent tracks and adjacent bits in perpendicular magnetic recording systems. In this paper, a practical three-dimensional topology optimization technique combined with the edge-based finite-element method is proposed. A technique for obtaining a smooth topology is also shown. The optimization of single-pole-type head having a magnetic shield is performed by using the topology optimization technique so that the leakage flux in the adjacent bit can be reduced. A useful shape of the magnetic shield obtained by the proposed technique is illustrated

Keywords

finite element analysis; magnetic flux; magnetic heads; magnetic leakage; magnetic shielding; perpendicular magnetic recording; sensitivity analysis; 3D topology optimization; design sensitivity analysis; finite element method; leakage flux; magnetic shield; perpendicular magnetic recording systems; recording field; single-pole-type head; stray field; write head; Design optimization; Finite element methods; Magnetic flux; Magnetic heads; Magnetic shielding; Optimization methods; Perpendicular magnetic recording; Sensitivity analysis; Shape; Topology; ON/OFF method; sensitivity analysis; single-pole-type-head; three-dimensional (3-D) topology optimization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871422

Filename

1608399