Title :
Trailing Shield Head Recording in Discrete Track Media
Author :
Greaves, Simon ; Kanai, Yasushi ; Muraoka, Hiroaki
Author_Institution :
RIEC, Sendai
Abstract :
Magnetic recording in perpendicular media using write heads with trailing shields was simulated. The recording performance of discrete track media and continuous media was compared. Trailing shields increase the head field gradient, leading to sharper transitions and higher signal-to-noise ratio (SNR). The optimum trailing shield gap was determined to be 30 nm for both types of media. Using such a write head and subject to the condition of no adjacent track erasure the discrete track media SNR was 1.5 dB higher than the continuous media at a linear density of 1700 kfci
Keywords :
magnetic heads; magnetic transitions; perpendicular magnetic recording; 30 nm; SNR; continuous media; discrete track media; head field gradient; magnetic recording; optimum trailing shield gap; perpendicular media; signal-to-noise ratio; trailing shield head recording; write heads; Disk recording; Jitter; Magnetic heads; Magnetic recording; Magnetic shielding; Permeability; Perpendicular magnetic recording; Saturation magnetization; Signal to noise ratio; Soft magnetic materials; Heads; magnetic recording; perpendicular media; simulation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878665