Magnetic head with multilayer film including metal magnetic...

Details Magnetic head with multilayer film including metal magnetic... Magnetic head with multilayer film including metal magnetic...

2007-12-04

2007-12-04

Evans, Jefferson (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125020

Reexamination Certificate

active

10523104

ABSTRACT:
In a magnetic head, a multilayer film is disposed, the multilayer film including metal magnetic films and non-magnetic films that are alternately laminated, and a boundary between the multilayer film and a magnetic oxide substrate or a non-magnetic substrate on which the multilayer film is to be formed is parallel with a gap section at a surface of the magnetic head for sliding with respect to a magnetic recording medium. The metal magnetic films constituting the multilayer film have two or more types of thickness, or the metal magnetic films constituting the multilayer film have a uniform thickness, and the uniform thickness t satisfies t<v×cosθ/fmax, where v denotes a relative speed of the head to the recording medium, fmax denotes an upper limit of frequencies to be used and θ denotes an azimuth angle. With this configuration, a magnetic head having a suppressed pseudo signal and reduced noise can be provided, and a magnetic recording/reproducing device incorporating this magnetic head can be provided.

REFERENCES:
patent: 4695908 (1987-09-01), Imakoshi et al.
patent: 5278716 (1994-01-01), Okuda et al.
patent: 5452167 (1995-09-01), Nago
patent: 6493182 (2002-12-01), Yamanaka et al.
patent: 6717770 (2004-04-01), Crawford
patent: 64-23411 (1989-01-01), None
patent: 7-296321 (1995-11-01), None
patent: 8-147621 (1996-06-01), None
patent: 2959908 (1999-07-01), None

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