DocumentCode :
1013016
Title :
Relations between coercivity and recording performances for Ba-ferrite particulate perpendicular media
Author :
Isshiki, M. ; Suzuki, T. ; Ito, T. ; Ido, T. ; Fujiwara, T.
Author_Institution :
Toshiba R & D Center, Kawasaki, Japan
Volume :
21
Issue :
5
fYear :
1985
fDate :
9/1/1985 12:00:00 AM
Firstpage :
1486
Lastpage :
1488
Abstract :
Recording performances for Ba-ferrite particulate perpendicular magnetic tapes, with different coercivity values, 
=470- 1930 Oe, and other properties substantially unchanged, were investigated with ring-shaped heads. Noise was found to be independent of . It was ascertained that reproduced voltages and signal-to-noise ratios were constant and highest for 
being 600 - 700 Oe depending on recorded wavelength, and that they decreased in proportion to for 
. Therefore, Ba-ferrite tapes can be designed, with their highest performances, to adjust their coercivity so as to meet ferrite or metal head recording ability.
=470- 1930 Oe, and other properties substantially unchanged, were investigated with ring-shaped heads. Noise was found to be independent of . It was ascertained that reproduced voltages and signal-to-noise ratios were constant and highest for being 600 - 700 Oe depending on recorded wavelength, and that they decreased in proportion to for . Therefore, Ba-ferrite tapes can be designed, with their highest performances, to adjust their coercivity so as to meet ferrite or metal head recording ability.Keywords :
Coercive forces; Ferrite materials/devices; Magnetic tape recording; Perpendicular magnetic recording; Coercive force; Ferrites; Magnetic anisotropy; Magnetic heads; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Signal to noise ratio; Voltage; Wavelength measurement;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1985.1064050
Filename :
1064050
Link To Document :
