Title :
Measurement of transition shape, width, and total magnetic spacing
Author :
Mallary, Michael L. ; Beauregard, Roger ; Benakli, Mourad ; Torabi, Adam F. ; Marshall, Steven B.
Author_Institution :
Maxtor Corp., Shrewsbury, MA, USA
fDate :
7/1/2004 12:00:00 AM
Abstract :
Measurement of the harmonics of low-frequency all-ones patterns and the shield-to-shield read gap are used here to reconstruct the spacing, the isolated transition shape, and the width parameter for longitudinal recording. For perpendicular, the media thickness parameters and data at two spacings are needed to accurately determine the spacing and width parameter. The -90% to +90% transition shapes fits well to a tanh(x/a) shape for longitudinal and perpendicular recording.
Keywords :
magnetic recording; magnetic transitions; magnetic variables measurement; all-ones patterns; harmonics measurement; hyperbolic tangent; longitudinal recording; magnetic spacing; magnetic transition; media thickness parameters; perpendicular recording; shield-to-shield read gap; spacing reconstruction; transition shape; transition width; Frequency; Helium; Magnetic flux; Magnetic heads; Magnetic noise; Magnetic recording; Magnetic shielding; Measurement errors; Perpendicular magnetic recording; Shape measurement; Hyperbolic tangent; transition shape; transition width;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.832469
