Title :
Optimization of heads for perpendicular recording
Author :
Shute, Hazel A. ; Miles, Jim J. ; Wilton, David T. ; Mapps, Desmond J.
Author_Institution :
Centre for Res. in Inf. Storage Technol., Univ. of Plymouth, UK
fDate :
9/1/2002 12:00:00 AM
Abstract :
The effects of gap length, head-underlayer separation, and return pole potential on the magnitude and direction of the field of a gapped head are investigated using an analytic two-dimensional model. Criteria derived from a micromagnetic model of a perpendicular recording medium are used to optimize the head geometry for various media parameters. A head with a gap length which is at most 2.5 times the head-medium separation can write on higher coercivity media than a single pole.
Keywords :
coercive force; magnetic heads; perpendicular magnetic recording; analytic two-dimensional model; gap length; gapped head field; head geometry; head optimization; head-medium separation; head-underlayer separation; higher coercivity media; media parameters; micromagnetic model; perpendicular recording; return pole potential; single pole; Coercive force; Geometry; Magnetic heads; Magnetic separation; Micromagnetics; Perpendicular magnetic recording; Solid modeling; Switches; Thermal stability; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802655
