Title :
Fabrication of multi-turn thin film head
Author :
Miura, Y. ; Takahashi, Y. ; Kume, F. ; Toda, J. ; Tsutsumi, S. ; Kawakami, S.
Author_Institution :
Fijitsu Laboratories, Nakahara, Kawasaki, Japan
fDate :
9/1/1980 12:00:00 AM
Abstract :
A new fabrication method has been developed for multi-turn thin film heads. In this method, a multi-turn coil is formed by piling two layers of flat surfaced bifilar spiral coils. A bevel-etching technique has been developed to form the flat surface of the bifilar coil. A 9-turn, 18-track thin film head has been fabricated and tested on the conventional particulate disk. The read efficiency was 88% and the MMF required for 30 dB of overwrite was 0.32AT.
Keywords :
Magnetic disk recording; Magnetic recording/reading heads; Chemicals; Coils; Fabrication; Magnetic heads; Resists; Sputter etching; Substrates; Temperature control; Testing; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1980.1060762
