Effects of a highly permeable keeper layer on transition shifts for thin film media

Effects of a highly permeable keeper layer on transition shifts for thin film media

Utilizing a time domain correlation algorithm, we observed that the readback signal for media with a soft keeper layer can be shifted from their original written locations in the hard under layer. The shift was similar to the hard-easy transition shift. It results from a change of magnetic charge di...

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Veröffentlicht in:IEEE transactions on magnetics 1994-11, Vol.30 (6), p.3984-3986
Hauptverfasser: Guo Mian, Po-Kang Wang, Reed, W.B., Zubeck, R., Hollars, D.
Format: Artikel
Sprache:eng
Schlagworte:
Autocorrelation
Coatings
Error analysis
Magnetic domains
Magnetic flux
Pulse measurements
Signal to noise ratio
Space vector pulse width modulation
Time domain analysis
Transistors
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Zusammenfassung:Utilizing a time domain correlation algorithm, we observed that the readback signal for media with a soft keeper layer can be shifted from their original written locations in the hard under layer. The shift was similar to the hard-easy transition shift. It results from a change of magnetic charge distribution in the keeper layer in the read process. The effect of the keeper layer on transition shifts in the write process was insignificant.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.333965