Effects of substrate bias with recording layer on perpendicular magnetic media

Author

Shi, Jian Zhong ; Lim, W.K. ; Phyoe, W.L. ; Hu, Jiang Feng ; Cher, Kelvin M. ; Zhou, Tie Jun

Author_Institution

Data Storage Inst., Singapore, Singapore

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

1

Lastpage

2

Abstract

A direct current (DC) bias is added on the substrate during the deposition of the recording layer of perpendicular magnetic recording media. It has been found that the bias has significant effects on the magnetic properties, such as coercivity, nucleation field, squareness, and domain size, and microstructure, such grain size, grain size segregation, and c-axis orientation. It is also observed that the roughness of the surface is reduced by using the bias. The mechanism of the bias effect is discussed.

Keywords

coercive force; grain size; magnetic hysteresis; magnetic recording; nucleation; surface roughness; DC bias; bias effect; c-axis orientation; coercivity; direct current bias; domain size; grain size segregation; microstructure; nucleation field; perpendicular magnetic recording media; recording layer deposition; squareness; substrate bias; surface roughness; Magnetic confinement; Magnetic domains; Magnetic properties; Magnetic resonance imaging; Media; Perpendicular magnetic recording; DC bias; PMR media; magnetic properties; roughness;

fLanguage

English

Publisher

ieee

Conference_Titel

APMRC, 2012 Digest

Conference_Location

Singapore

Print_ISBN

978-1-4673-4734-1

Type

conf

Filename

6407786