Title :
An analytical model for the cross-track correlation length including inter-granular interactions
Author :
Jin, Zhen ; Wang, Xiaobin ; Bertram, H. Neal
Author_Institution :
Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
Abstract :
An analytical model is developed for calculating the cross-track correlation length in a perpendicular recording system, including both the medium inter-granular exchange and the magnetostatic interactions. For a typical range of parameters in current perpendicular recording systems, the cross-track correlation length varies from about 0.7-0.9 of the average grain diameter: at zero exchange, to about 2-3 at a strong exchange field of 0.1HK. The relation with jitter noise is also investigated.
Keywords :
exchange interactions (electron); jitter; magnetic recording noise; perpendicular magnetic recording; analytical model; cross-track correlation length; grain diameter; jitter noise; magnetostatic interactions; medium inter-granular exchange; perpendicular recording system; transition noise; Analytical models; Grain size; Jitter; Magnetic noise; Magnetic recording; Magnetization; Magnetostatics; Micromagnetics; Perpendicular magnetic recording; Probability distribution;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816494
