Method of making a transducer with improved inductive coupling

Details Method of making a transducer with improved inductive coupling Method of making a transducer with improved inductive coupling

1994-01-13

1995-07-04

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

360123, 427131, 427132, G11B 542

Patent

active

054288878

ABSTRACT:
A thin film magnetic transducer is formed in a plurality of layers and comprises a yoke with at least one arm having segments respectively lying in separate said layers and connected through a transition layer, and one or more coils; the coil (or coils) and the yoke are intertwined to provide more than two flux interactions therebetween. In one aspect, the segments of the arm are oriented obliquely to each other and have easy axes of magnetization respectively transverse to the directions of flux conduction through said segments, and the segments are joined together so that flux can pass between them without flowing parallel to the easy axis of any of the segments.

REFERENCES:
patent: 3549825 (1970-12-01), Trimble
patent: 3967368 (1976-07-01), Brock et al.
patent: 4100583 (1978-07-01), Koel et al.
patent: 4165525 (1979-08-01), Koel et al.
patent: 4223360 (1980-09-01), Sansom et al.
patent: 4335410 (1982-06-01), Neu
patent: 4374403 (1983-02-01), Oshima et al.
patent: 4376337 (1983-03-01), Kobayasi et al.
patent: 4535375 (1985-08-01), Mowry et al.
patent: 4566050 (1986-01-01), Beam et al.
patent: 4613918 (1986-09-01), Kanai et al.
patent: 4626946 (1986-12-01), Vinal
patent: 4626947 (1986-12-01), Narishige et al.
patent: 4639811 (1987-01-01), Diepers et al.
patent: 4649447 (1987-03-01), Huang et al.
patent: 4656546 (1987-04-01), Mallory
patent: 4663685 (1987-05-01), Tsang
patent: 4668913 (1987-05-01), Vinal
patent: 4695351 (1987-09-01), Mallary
patent: 4698711 (1987-10-01), Vinal
patent: 4745506 (1988-05-01), Nakamura et al.
patent: 4803580 (1989-02-01), Mowry
patent: 4816947 (1989-03-01), Vinal et al.
patent: 4825318 (1989-04-01), Hoo et al.
patent: 4891725 (1990-01-01), Newry
patent: 4912584 (1990-03-01), Mallary et al.
patent: 4931886 (1990-06-01), Mallary
patent: 5027247 (1991-06-01), Nakanishi
patent: 5085935 (1992-02-01), Mallary
patent: 5089334 (1992-02-01), Mallary et al.
patent: 5184267 (1993-02-01), Mallary
patent: 5195005 (1993-03-01), Mallary et al.
Maruyama et al., IEEE "A Yoke Magnetrosistive Head for High Track Density Recording", pp. 2503-2505, 1987.
Chow, IBM Technical Bulletin, "Multi-Turn Core and Winding for Thin Film Inductive Head", vol. 24, No. 9, p. 4479, Feb., 1982.
Mallary et al., IEEE Transactions on Magnetics, "Conduction of Flux at High Frequencies by a Charge-Free Magnetization Distribution", vol. 24, No. 6, pp. 2374-2376, Nov., 1988.
Mallary, J. Appl. Phys., "Conduction of Flux at High Frequencies in Permalloy Strips by Small-angle Rotations", 57(1), pp. 3952-3954, Apr. 15, 1985.
Mallary et al., J. Appl. Phys., "Three-Dimensional Transmission Line Model for Flux Conduction in Thin Film Recording Heads", 67(9), pp. 4863-4865, May 1, 1990.
Mallary et al., IEEE Transactions on Magnetics, "Frequency of Thin Film Heads with Longitudinal and Transverse Anisotropy", vol. 26, No. 5, pp. 1334-1336, Sep., 1990.
Iwasaki et al., IEEE Transactions on Magnetics, "An Analysis for the Magnetization Mode for High Density Magnetic Recording", vol. MAG-13, No. 5, pp. 1272-1277, Sep., 1977.
Oshiki et al., J. Appl. Phys., "A Thin Film Head for Perpendicular Magnetic Recording", 53(3), pp. 2593-2595, Mar., 1982.
Jeffers, IEEE Transactions of Magnetics, "Magnetoresistive Transducer with Canted Easy Axis", vol. MAG-15, No. 6, pp. 1628-1629, Nov., 1979.
Vinal, IBM Technical Disclosure Bulletin, "Magnetically Shielded Twin-Track Magnetic Read Head Structure", vol. 26, No. 7B, pp. 3748-3751, Dec. 1983.
Lazzari et al., IEEE Transactions on Magnetics, "A New Thin Film Head Generation IC Head", vol. 25, No. 5, pp. 3190-3193.

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