The Influence of Bit Patterned Medium Design and Imperfections on Magnetoresistive Playback

Author

Smith, D. ; Chunsheng E ; Khizroev, S. ; Litvinov, Dmtri

Author_Institution

Dept. of Electr. & Comput. Eng., Houston Univ., TX

Volume

42

Issue

10

fYear

2006

Firstpage

2285

Lastpage

2287

Abstract

Magnetoresistive playback off bit patterned magnetic recording media is studied. Three playback configurations are compared: not shielded sensors, shielded sensors commonly used in magnetic recording systems, and shielded differential sensors. Influence of patterned medium parameters including bit-filling ratio, bit shape, bit position jitter, bit-size variation on the playback signal is studied. Playback signal amplitude, D50, and signal-to-noise ratio are used to compare different playback sensor configurations. It is found that in general, shielded differential readers offer superior performance as compared to both shielded single sensor readers and not shielded readers

Keywords

magnetic heads; magnetic sensors; magnetoresistive devices; perpendicular magnetic recording; bit patterned magnetic recording media; bit patterned medium design; differential playback heads; magnetic recording systems; magnetoresistive playback; patterned medium parameters; playback signal amplitude; shielded differential sensors; Magnetic analysis; Magnetic heads; Magnetic materials; Magnetic noise; Magnetic recording; Magnetic sensors; Magnetization; Magnetoresistance; Perpendicular magnetic recording; Sensor systems; Bit patterned medium recording; differential playback heads; magnetic recording; magnetoresistive playback;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.880458

Filename

1704274