DocumentCode :
755476
Title :
Readback Responses in Three Dimensions for Multilayered Recording Media Configurations
Author :
Wood, Roger W. ; Wilton, David T.
Author_Institution :
Hitachi Global Storage Technol., San Jose, CA
Volume :
44
Issue :
7
fYear :
2008
fDate :
7/1/2008 12:00:00 AM
Firstpage :
1874
Lastpage :
1890
Abstract :
We have applied a technique for modeling the transmission of three-dimensional (3D) magnetic fields through an arbitrary number of layers of a layered structure to the specific case of a recording medium in order to study and explain the readback response for a variety of perpendicular recording configurations. We examine in particular the low-frequency response associated with flux-flow in the soft underlayer and the behavior of the main response for finite read and write widths. Our work leads to a useful analytic approximation for the 3D on-track readback response.
Keywords :
magnetic multilayers; perpendicular magnetic recording; flux-flow; layered structure; low-frequency response; multilayered recording media configurations; perpendicular recording configurations; readback responses; soft underlayer; three-dimensional magnetic field transmission; 3-D response; Anisotropic permeability; DC null; frequency response; layered media; magnetic recording;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2008.920525
Filename :
4544936
Link To Document :
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