Magnetic head

Details Magnetic head Magnetic head

2005-10-12

2009-02-03

Blouin, Mark (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07486478

ABSTRACT:
Provided is a magnetic head having a magnetic thin film structure that reduces the effect of a stray field and generates a magnetization reversal at a high speed. The magnetic head includes a first pole, a second pole spaced apart from the first pole, and an induction coil that induces a magnetic field in the first and second poles, wherein the first and second poles include a pole tip in which a leakage flux for recording is generated, and a head yoke that guides the flux flowing in the poles, and at least one implant for controlling a magnetic domain, the implant formed in at least one of the first and second poles. The magnetic thin film can effectively reduce the effect of a stray field entering from the outside, and can control a domain wall motion so that high speed magnetic recording is possible, by generating a magnetization reversal at a high speed corresponding to a magnetic field applied by an induction coil.

REFERENCES:
patent: 4423450 (1983-12-01), Hamilton
patent: 6111724 (2000-08-01), Santini
patent: 2005/0013045 (2005-01-01), Hasegawa et al.
patent: 59-077614 (1984-05-01), None
patent: 60-164914 (1985-08-01), None
patent: 6-203337 (1994-07-01), None
patent: 2000-251227 (2000-09-01), None

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