Title :
A double sided metal-in-gap head for 150 Mb/in2 recording
Author :
Nishiyama, T. ; Goto, R. ; Yamazaki, M. ; Sakaguchi, I. ; Suwabe, S. ; Iwama, A.
Author_Institution :
Hitachi Metals Ltd., Tochigi, Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
The performance of double-sided metal-in-gap (D-MIG) composite heads has been evaluated on thin-film media of various coercive forces. The O/W of D-MIG was better than that of the single-sided one because of its higher intensity of the recording magnetic field. The total signal-to-noise ratio (SNR) of a D-MIG on a medium of 1600 Oe was better than that on a medium of 1250 Oe. Consequently, for a D-MIG, predicted recording density extended to 150 Mb/in2 on a medium of 1600 Oe with the criterion of O/W(-28 dB) and total SNR (31 dB)
Keywords :
coercive force; ferrite devices; magnetic heads; magnetic recording; magnetic thin film devices; noise; 2D electromagnetic FEM; D-MIG head; Mn1-xZnxFe2O4; MnZn ferrite; SNR; coercive forces; double sided metal-in-gap composite head; magnetic field intensity; magnetic recording; recording density; signal-to-noise ratio; thin-film media; Coercive force; Disk recording; Frequency; Magnetic fields; Magnetic heads; Transistors; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
