Film magnetic head for high frequency recording

Details Film magnetic head for high frequency recording Film magnetic head for high frequency recording

1988-10-31

1991-06-25

Severin, David J.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 5147

Patent

active

050272470

ABSTRACT:
A film magnetic head in which a soft metal magnetic film having uniaxial magnetic anisotropy is employed as a magnetic pole material, and a magnetic circuit having a magnetic path direction substantially perpendicular to the easy axis direction thereof is provided. The magnetic head records and reproduces signals having frequencies of 1 MHz and higher. According to a first embodiment of the invention the length W of a magnetic pole film in the easy axis direction forming a magnetic path is defined as follows:

REFERENCES:
patent: 4103315 (1978-07-01), Hempstead et al.
patent: 4316228 (1982-02-01), Fujiwasa et al.
patent: 4450494 (1984-05-01), Fujiwasa et al.
patent: 4571652 (1986-02-01), Fujiwasa et al.
patent: 4604670 (1986-08-01), Visser

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