Spatially resolved, in-situ measurements of the coercive force of thin film magnetic media

A method is presented for the nondestructive measurement of the coercive force of thin-film magnetic recording media. The technique involves the application of a precisely controlled erasing field to a previously written sequence of isolated magnetic transitions. Monitoring the playback response of...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 1989-09, Vol.25 (5), p.3414-3416
Main Authors: Fisher, R.D., Pressesky, J.L.
Format: Article
Language:English
Subjects:
Area measurement
Coercive force
Current measurement
Envelope detectors
Force measurement
Magnetic films
Magnetic heads
Magnetic recording
Spatial resolution
Test equipment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method is presented for the nondestructive measurement of the coercive force of thin-film magnetic recording media. The technique involves the application of a precisely controlled erasing field to a previously written sequence of isolated magnetic transitions. Monitoring the playback response of the previously recorded pattern as a function of the erasing field permits an accurate estimate of the coercive force. The technique is applied in such a manner that coercive force variations along any radius can be measured.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.42319