Title :
Nonlinear transition shift measurement in perpendicular magnetic recording
Author :
Muraoka, Hiroaki ; Wood, Roger ; Nakamura, Yoshihisa
Author_Institution :
Tohoku Univ., Sendai, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
Transition-shift distortion for perpendicular magnetic recording is measured using a pseudorandom sequence and extracted dipulse analysis. The analysis reveals moderately low distortion at a high linear density of 318 kFRPI. Perpendicular recording is expected to give rise to transition-shift distortion in a direction opposite to that for longitudinal recording. However, very little transition-shift distortion is observed. The distortion that does occur appears to be predominantly a narrowing of `following´ transitions
Keywords :
perpendicular magnetic recording; dipulse analysis; following transition; linear density; nonlinear transition shift distortion; perpendicular magnetic recording; pseudorandom sequence; Disk recording; Distortion measurement; Magnetic analysis; Magnetic heads; Nonlinear distortion; Perpendicular magnetic recording; Polynomials; Random sequences; Space vector pulse width modulation; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
