3-D head field modeling for perpendicular magnetic recording

Author

Wilton, D.T. ; Mckirdy, D.M. ; Shute, H.A. ; Miles, J.J. ; Mapps, D.J.

Author_Institution

Dept. of Math. & Stat., Univ. of Plymouth, UK

fYear

2003

fDate

6-8 Jan. 2003

Firstpage

42

Abstract

In order to achieve areal densities in magnetic recording of the order of 1 Tbit/in/sup 2/ it has been suggested that a feasible system, based on current technologies, will involve a perpendicular head and a perpendicular medium with a soft magnetic underlayer. Micromagnetic modelling plays an important role in the design and analysis of recording systems and within any such calculation it is necessary to have accurate data on the magnetic field produced by the head. Numerical finite element and finite difference calculations are computationally intensive, particularly in 3D, but progress is now being made with 3D analytic models which take the magnetic underlayer into account. This paper reports on progress in that direction and in particular considers the geometry of a double-shielded perpendicular single pole head.

Keywords

computational electromagnetics; finite difference methods; finite element analysis; magnetic fields; magnetic heads; micromagnetics; perpendicular magnetic recording; 3D analytic models; double-shielded perpendicular single pole heads; finite difference calculations; head magnetic fields; magnetic recording areal densities; micromagnetic modelling; numerical finite element methods; perpendicular heads; perpendicular magnetic recording 3D head field modeling; perpendicular soft magnetic underlayer medium; recording system design/analysis; Finite difference methods; Finite element methods; Geometry; Magnetic analysis; Magnetic fields; Magnetic heads; Magnetic recording; Micromagnetics; Perpendicular magnetic recording; Soft magnetic materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Joint NAPMRC 2003. Digest of Technical Papers [Perpendicular Magnetic Recording Conference]

Conference_Location

Monterey, CA, USA

Print_ISBN

0-7803-7746-X

Type

conf

DOI

10.1109/NAPMRC.2003.1177046

Filename

1177046