Oriented longitudinal media on glass substrates

Author

Bian, X. ; Tang, K. ; Doerner, M. ; Mirzamaani, M. ; Polcyn, A. ; Mercado, Mark ; Xiao, Q.-F. ; Zhang, J. ; Dennig, P. ; Hagan, J.

Author_Institution

IBM Storage Technol. Div., San Jose, CA, USA

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

This paper reports on the recent breakthrough of achieving high orientation ratio (OR) on directly textured glass substrates. We present a unique medium design combining seedlayer, underlayer, and an antiferromagnetically coupled (AFC) magnetic layer structure. Such a structure gives rise to a high OR and leads to significant improvement of recording performance. This technology has enabled the extension of glass disk media to ultra-high density longitudinal recording.

Keywords

antiferromagnetic materials; glass; magnetic disc storage; magnetic recording; magnetic structure; surface morphology; antiferromagnetically coupled magnetic layer structure; glass disk media; glass substrates; orientation ratio; oriented longitudinal media; seedlayer; textured glass substrates; ultrahigh density longitudinal recording; Antiferromagnetic materials; Automatic frequency control; Disk recording; Glass; Magnetic anisotropy; Magnetic recording; Perpendicular magnetic anisotropy; Signal to noise ratio; Space vector pulse width modulation; Strain measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2003. INTERMAG 2003. IEEE International

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7647-1

Type

conf

DOI

10.1109/INTMAG.2003.1230574

Filename

1230574