Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.880458
