Title :
Effects of a highly permeable keeper layer on transition shifts for thin film media
Author :
Mian, Guo ; Wang, Po-Kang ; Reed, William B. ; Zubeck, Robert ; Hollars, Dennis
Author_Institution :
Conner Peripherals, San Jose, CA, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
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
Keywords :
magnetic recording; magnetic thin films; time-domain analysis; hard under layer; hard-easy transition shift; magnetic charge distribution; permeable keeper layer; read process; readback signal; soft keeper layer; thin film media; time domain correlation algorithm; transition shifts; write process; Autocorrelation; Coatings; Error analysis; Magnetic domains; Magnetic flux; Pulse measurements; Signal to noise ratio; Space vector pulse width modulation; Time domain analysis; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
