DocumentCode
1450117
Title
Effect of Head Field Gradient on Nonlinear Transition Shift in Perpendicular Recording
Author
Li, Shaoping ; Mendez, Hector ; Torabi, Adam F. ; Pan, Tao ; Guan, Lijie ; Mao, Sining
Author_Institution
Western Digital Corp., Fremont, CA, USA
Volume
45
Issue
10
fYear
2009
Firstpage
3707
Lastpage
3710
Abstract
A modified test of the fifth harmonic measurement for nonlinear transition shift (NLTS) is used to study the influence of the head field properties on some parametric data and signal-to-noise ratio (SNR) performances in perpendicular recording. Particularly, the NLTS properties of two different writer head designs were evaluated in connection with their recording performances. It was revealed that the NLTS properties are sensitive to both the head field strength and head field gradient and thus affect the SNR and bit error rate (BER) performances strongly, especially at high linear density.
Keywords
error statistics; harmonic analysis; magnetic heads; perpendicular magnetic recording; BER; bit error rate; fifth harmonic measurement; head field gradient; head field strength; nonlinear transition shift; perpendicular recording; signal-to-noise ratio performances; writer head designs; NLTS; SNR; perpendicular recording (PMR); write head field; write head field gradient;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2009.2024888
Filename
5257149
Link To Document