Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
61 (1987), S. 4182-4184
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Thin-film heads for 8.8-in.-diam particulate media rigid disks having a recording density of 20 kBPI were designed utilizing numerical analysis techniques and experimental results. The heads having a total thickness of 3.5 μm (outer edge to edge length in media movement direction) and gap depth of less than 1.5 μm provide satisfactory reproducing and recording characteristics. A novel head structure was developed for which the magnetic path is closed at the front end of the gap film to simplify detection of the end point in the polishing process in order to achieve the desired gap depth. The head is fabricated by adding two steps to the conventional process before the top magnetic film is deposited. These steps are (1) removing a part of the gap film, masking by the top organic insulating film, by using carbon tetrafluoride ion and (2) etching back the organic film so as to expose the gap film from the edge of the organic film that determine the cardinal point of the head gap.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.338471
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