DocumentCode
1448162
Title
Effect of GMR amplitude asymmetry at track edge on servo position error signal
Author
Kao, Andrew S. ; Li, Zhaohui ; Yang, Won Choul ; Wang, Geng ; Lee, Hyung J.
Author_Institution
Samsung Inf. Syst. America, San Jose, CA, USA
Volume
36
Issue
5
fYear
2000
fDate
9/1/2000 12:00:00 AM
Firstpage
2590
Lastpage
2592
Abstract
The effect of track-edge amplitude asymmetry on position-error signal, PES, of spin-valve GMR heads was investigated. Cross-track profiles of both amplitude and amplitude asymmetry are showed along with the PES line of the head. The results indicated that amplitude-asymmetry effect from servo burst is finite but not significant enough to alter PES sensitivity, or the slope of PES line. However, it is shown experimentally that the PES linearity is functionally correlated with asymmetry of the servo bursts, which substantiates the track-edge effect of spin-valve heads
Keywords
giant magnetoresistance; magnetic heads; servomechanisms; spin valves; GMR amplitude asymmetry; PES linearity; amplitude-asymmetry effect; cross-track profiles; position-error signal; servo burst; servo bursts; servo position error signal; spin-valve GMR heads; track edge; Degradation; Demagnetization; Fabrication; Lead; Linearity; Magnetic heads; Magnetization; Position measurement; Servomechanisms; Testing;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.908525
Filename
908525
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