Title :
Perpendicular recording characteristics of single pole thin film head
Author :
Mine, H. ; Wada, T. ; Yamashita, M. ; Suenaga, T.
Author_Institution :
Sumitomo Special Metals Co. Ltd., Osaka, Japan
fDate :
11/1/1991 12:00:00 AM
Abstract :
The recording and reproducing characteristics of single pole thin film heads with various main pole thicknesses from 0.15 to 1.1 μm were investigated. The normalized output voltage is more than 100 nVop/μ-t-m/s, and D50 is 110 KFCI. The C/N ratio and overwrite are 41 dB and better than -30 dB, respectively. Furthermore, it was found that a magnetic shield, using soft magnetic material, is important for preventing the influence of external magnetic fields. Pole recession was found to affect the reproduced output, and must be controlled in the manufacturing process
Keywords :
magnetic heads; magnetic recording; magnetic thin film devices; 41 dB; magnetic head; magnetic shield; overwrite; perpendicular recording characteristics; pole recession; reproducing characteristics; single pole thin film head; soft magnetic material; Amorphous magnetic materials; Magnetic anisotropy; Magnetic films; Magnetic heads; Magnetic recording; Magnetic shielding; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Soft magnetic materials; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
