High Recording Density Tape Using Fine Barium-Ferrite Particles With Improved Thermal Stability

Author

Matsumoto, A. ; Murata, Y. ; Musha, A. ; Matsubaguchi, S. ; Shimizu, O.

Author_Institution

Recording Media Res. Labs., FUJIFILM Corp., Odawara, Japan

Volume

46

Issue

5

fYear

2010

fDate

5/1/2010 12:00:00 AM

Firstpage

1208

Lastpage

1211

Abstract

The effects of reducing barium-ferrite magnetic particle volume have been studied. We optimized barium-ferrite substitution elements and their amount and demonstrated thermal stability for very fine particles of the size 1.5 ?? 10³ nm³. Using a giant magnetoresistive (GMR) head with a 0.2 ??m read track width, test tape containing these fine particles exhibited a bit error rate of 1.5 ??10^-4 at a linear density of 360 kbpi using a noise predictive maximum likelihood (NPML) detection for nonstationary noise sources, i.e., data-dependent noise. This corresponds to a 15 Gb/in² areal recording density in linear tape application.

Keywords

barium; disc drives; ferrites; magnetic recording; maximum likelihood detection; thermal stability; Ba; barium-ferrite magnetic particle volume; data-dependent noise; giant magnetoresistive head; high recording density tape; linear density; linear tape; noise predictive maximum likelihood detection; nonstationary noise sources; thermal stability; Barium ferrite particle; data-dependent noise predictive maximum likelihood; magnetic tape recording; thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2039798

Filename

5422627