Title :
Film heads for large-capacity fast-access magnetic disk storage
Author :
Koshimoto, Y. ; Mikazuki, T. ; Kishigami, J.
Author_Institution :
NTT Electrical Communications Laboratories, Tokyo, Japan
fDate :
9/1/1987 12:00:00 AM
Abstract :
Increasing the pole thickness of film heads is effective in improving the strength of write fields. This is necessary to handle the high coercive force(Hc=63kA/m) thin film media utilized in the large-capacity, fast-access disk storage[1] nicknamed GEMMY. Film heads with thicker poles are designed for storage devices. These heads achieve a linear density of 1240bit/mm(940 fc/mm) and a transfer rate of 4.4MB/sec (26.3Mfc/sec).
Keywords :
Magnetic recording/reading heads; Bandwidth; Coercive force; Ferrite films; Magnetic films; Magnetic flux; Magnetic heads; Magnetic materials; Permeability; Saturation magnetization; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1987.1065725
