SNR and density limit estimates: A comparison of longitudinal and perpendicular recording

Authors
Bertram, HN Williams, M
Citation
Hn. Bertram et M. Williams, SNR and density limit estimates: A comparison of longitudinal and perpendicular recording, IEEE MAGNET, 36(1), 2000, pp. 4-9
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON MAGNETICS
ISSN journal
00189464 → ACNP
Volume
36
Issue
1
Year of publication
2000
Part
1
Pages
4 - 9
Database
ISI
SICI code
0018-9464(200001)36:1<4:SADLEA>2.0.ZU;2-6
Abstract
Simplified Neel-Arrhenius analysis is utilized to determine limiting densit ies versus SNR for longitudinal and keepered-perpendicular media. Dominant transition noise is assumed and the effects of grain size distribution and storage above room temperature are included. Perpendicular recording potent ially exhibits a higher density than longitudinal; for example, at SNR = 20 dB, the limiting densities are approximately 500 and 100 Gbit/in(2), respe ctively.