Magnetic thin-film head on a nonmagnetic substrate for vertical

Details Magnetic thin-film head on a nonmagnetic substrate for vertical Magnetic thin-film head on a nonmagnetic substrate for vertical

1985-12-09

1989-08-01

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Core

360119, G11B 5147

Patent

active

048538159

ABSTRACT:
A magnetic thin-film head for a recording medium that can be magnetized vertically comprises a ring head-like conduction body which carries the magnetic flux and is applied to a nonmagnetic substrate. The conduction body has two magnet legs, the end pole pieces of which are arranged with a small gap width from each other and which have leg parts which are spaced wider than the gap width, and between which the turns of a write/read coil winding extend. This magnetic head provide manufacturing advantages, can be produced with high reproducibility and provides a high efficiency in the write and read function. The substrate is equipped with a depression, in which, at least largely, the leg part of one of the magnet legs and the turns of the write/read coil winding are disposed.

REFERENCES:
patent: 3639699 (1972-02-01), Tieman
patent: 3887945 (1975-06-01), Nepela et al.
patent: 4317149 (1982-02-01), Elser et al.
patent: 4429337 (1984-01-01), de Wilde
patent: 4458279 (1984-07-01), Katz
patent: 4490760 (1984-12-01), Kaminaka et al.
patent: 4550353 (1985-10-01), Hirai et al.
IEEE Trans. on Magnetics, vol. Mag--16, No. 1, Jan. 1980, pp. 71-76.
Feinwerktechnik & Messtechnig, Mar. 1980, pp. 53-59.
Siemens-Zeitschrift, 1978, pp. 434-437.
Introduction to Microlithography--ACS Symp. 219, 1983, title pg, pp. 18-19.
ION Bombardment Modification of Surfaces, 1984, pp. 372, 373, 383, title page.

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