Finite-element analysis of ring and single-pole write heads for perpendicular recording

Author

Wang, James Y. ; Prabhakar, Anil ; Liu, Francis

Author_Institution

Read-Rite Corp., Fremont, CA, USA

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2072

Lastpage

2074

Abstract

Write heads for use in perpendicular recording applications were modeled using finite-element analysis. A comparative analysis of ring and single-pole write heads was conducted. The single-pole head design had a higher field at the media along with higher field gradients and lower head inductance. Both models included the effects of a soft underlayer in the media, which is used in perpendicular recording. The finite-element analysis was checked for accuracy using Ampere´s law and the error in the calculated fields is estimated as less than 4%.

Keywords

error analysis; finite element analysis; magnetic heads; perpendicular magnetic recording; soft magnetic materials; Ampere law; accuracy; error estimation; finite-element analysis; higher field; higher field gradients; lower head inductance; perpendicular recording; ring write heads; single-pole write heads; soft underlayer; Finite element methods; Helium; Inductance; Magnetic analysis; Magnetic flux; Magnetic heads; Magnetoresistance; Perpendicular magnetic recording; Thermodynamics; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.801833

Filename

1042094