DocumentCode
1478541
Title
Effect of MR read non-linearities on extracted dipulse response
Author
Torabi, Adam F. ; Marshall, Steven B.
Author_Institution
Quantum Corp., Shrewsbury, MA, USA
Volume
33
Issue
5
fYear
1997
fDate
9/1/1997 12:00:00 AM
Firstpage
2716
Lastpage
2718
Abstract
The effect of MR nonlinearities on the extracted dipulse method has been studied. The study shows that there is a strong relationship between MR nonlinearities arising from soft adjacent layer (SAL) thickness or MR bias current variation and measured nonlinear transition shift echo amplitude (NLTS). A formation of a new echo is observed in the extracted dipulse spectrum in the case of high MR nonlinearities
Keywords
binary sequences; deconvolution; magnetic heads; magnetic recording noise; magnetoresistive devices; autocorrelation property; bias current variation; distortion; dynamic iterative model; extracted dipulse response; magnetoresistive head nonlinearities; nonlinear transition shift echo amplitude; pseudorandom sequence method; soft adjacent layer thickness variation; Autocorrelation; Current measurement; Data mining; Deconvolution; Magnetic heads; Magnetic recording; Magnetoresistance; Polynomials; Random sequences; Thickness measurement;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.617455
Filename
617455
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