Write-field gradient effect on transition width in perpendicular recording media

Author

Mochizuk, M. ; Hara, M. ; Nakamura, A. ; Igarashi, M.

Author_Institution

Storage Technol. Res. Center, Hitachi Ltd., Tokyo, Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

1351

Lastpage

1352

Abstract

Perpendicular magnetic recording (PMR) system using a single-pole writer and a double-layered perpendicular recording medium with a soft underlayer (SUL) is a promising candidate for high recording densities of over 100 Gb/in². The relationships between medium characteristics and recording performance have been studied. In this paper, we have clarified the dependency of the write-field gradient on the transition width using by a micromagnetic modeling. Also, the dependence of medium parameters is also discussed in the paper.

Keywords

magnetic heads; micromagnetics; perpendicular magnetic recording; soft magnetic materials; magnetic recording density; micromagnetic modeling; perpendicular magnetic recording media; soft underlayer; write-field gradient; write-field gradient effect; Anisotropic magnetoresistance; Boundary conditions; Elementary particle exchange interactions; Enterprise resource planning; Equations; Magnetic heads; Magnetization; Micromagnetics; Perpendicular magnetic recording; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1464105

Filename

1464105