Magnetic head with anisotropy in plane of core ports

Details Magnetic head with anisotropy in plane of core ports Magnetic head with anisotropy in plane of core ports

1985-10-30

1987-08-04

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360126, 360127, G11B 5127, G11B 5133, G11B 5147

Patent

active

046850120

ABSTRACT:
A magnetic head having a core of a magnetizable material around a part of which a coil is provided. A transducing gap is formed between two core parts of a magnetically anisotropic, amorphous ferromagnetic metal. The core parts of a magnetically anisotropic, amorphous ferromagnetic material have a magnetic anisotropy direction induced by a thermal treatment in a magnetic field which is in the plane of the core parts and encloses an angle .alpha. with the direction in which magnetic flux traverses the core parts during operation. .alpha. preferably is equial to 90.degree.. By these means an increased permeability in the MHz range is reached in combination with a minimum loss component.

REFERENCES:
patent: 4411716 (1983-10-01), Shiiki et al.
patent: 4450494 (1984-05-01), Fujiwara et al.
patent: 4488195 (1984-12-01), Yanagiuchi et al.
patent: 4578728 (1986-03-01), Sakakima et al.

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