Recording performance of a giant magnetoresistive head on a perpendicular multilayer medium

Author

Kim, Young K. ; Harig, John C. ; Noyes, George I. ; Ho, Kuoksan ; Kane, Matthew H. ; Lairson, Bruce M.

Author_Institution

Quantum Corp., Louisville, CO, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

4411

Lastpage

4412

Abstract

The magnetic recording characteristics of a giant magnetoresistive spin-valve head in combination with a perpendicular disk medium have been measured. The disk medium contains a 30-nm-thick Pt/CoCrTa multilayer displaying low noise and high remanence. A pulse width of 172 nm, a signal to noise ratio of 31 dB, and a rolloff D50 point of 120 kFCI were achieved. The parametric data and window margin testing show this recording system can support recording storage density of 3.5 Gbits/in² using a simple peak detect channel at a data rate of 65 Mbits/s

Keywords

giant magnetoresistance; magnetic disc storage; magnetic heads; magnetic multilayers; magnetoresistive devices; perpendicular magnetic recording; Pt-CoCrTa; Pt/CoCrTa multilayer; data rate; disk; giant magnetoresistive spin-valve head; magnetic recording; noise; peak detect channel; perpendicular medium; pulse width; remanence; rolloff D50 point; signal to noise ratio; storage density; Disk recording; Giant magnetoresistance; Magnetic heads; Magnetic multilayers; Magnetic noise; Magnetic recording; Perpendicular magnetic recording; Remanence; Signal to noise ratio; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.620454

Filename

620454