Magnetic head for use with a recording medium

Details Magnetic head for use with a recording medium Magnetic head for use with a recording medium

1996-11-04

1998-11-10

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

G11B 5127

Patent

active

058353127

ABSTRACT:
The present invention relates to a magnetic head for recording and reproducing signals from a magnetic recording medium, wherein the magnetic head comprises a stylus having a pair of electrodes, a conductive multilayer film having a staircase-shaped section, and a magnetic body formed on the multilayer film. The magnetic head further comprises an excitation conductive thin film disposed so as to surround the stylus, a magnetic yoke forming a closed magnetic loop together with a magnetic recording medium and the stylus, and an anti-abrasive film formed on the magnetic yoke so as to oppose the recording medium. During recording, a signal current is supplied to the excitation conductive thin film to generate a recording magnetic field from the end of the stylus. During reproduction, a high-frequency voltage is applied across the electrodes, and a magnetic impedance change of the stylus, caused by a signal magnetism on the recording medium, is detected. The relative position of the magnetic head to the recording medium is controlled by deflecting a cantilever according to a capacitance between the magnetic head and the recording medium. Accordingly, the magnetic head of the present invention is capable of remarkably enhancing recording densities and data transfer rates.

REFERENCES:
patent: 4464691 (1984-08-01), Sawazaki et al.
patent: 5331491 (1994-07-01), Hayakawa et al.

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