Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1993-06-25
1999-05-18
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Head
Hall effect
G11B5/39
Patent
active
059056100
ABSTRACT:
A combined read/write magnetic head is disclosed in which the read head includes a magnetoresistive element (MRE) overlying a substrate of substantially magnetically impermeable material, a broken (discontinuous) flux guide overlying the MRE and a continuous flux guide overlying the broken flux guide. The write head of the combined read/write magnetic head overlies the read head and shares the continuous flux guide with the read head, the continuous flux guide serving as a bottom pole of the write head. Significantly, the dimensions of the various elements of the combined read/write magnetic head are chosen so that relatively little magnetic flux produced by the write head during writing, or entering the write head during reading, is communicated via the shared flux guide to the MRE.
REFERENCES:
patent: 3921217 (1975-11-01), Thompson
patent: 4130847 (1978-12-01), Head et al.
patent: 4150408 (1979-04-01), Koel et al.
patent: 4504880 (1985-03-01), Church et al.
patent: 4789910 (1988-12-01), Otsuka et al.
patent: 4803580 (1989-02-01), Mowry
patent: 4803581 (1989-02-01), Kira et al.
patent: 4807074 (1989-02-01), Kamo
patent: 4860138 (1989-08-01), Vinal et al.
patent: 4891725 (1990-01-01), Mowry
patent: 4907113 (1990-03-01), Mallary
patent: 4954920 (1990-09-01), Yamada et al.
patent: 5025342 (1991-06-01), Nagata et al.
patent: 5079662 (1992-01-01), Kawakami et al.
patent: 5097371 (1992-03-01), Somers
patent: 5193038 (1993-03-01), Smith
C.H. Bajorek et al, "An Integrated Magnetoresistive Read, Inductive Write High Density Recording Head". Published Proceedings of 20th Annual Conference of Magnetism and Magnetic Materials, American Institute of Physics, New York, 1975, pp. 548-549.
Michalek Paul F.
Mitchell Terry B.
Wood William P.
Evans Jefferson
North American Philips Corporation
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