Title :
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
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;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230574
