Transducer with improved inductive coupling

Details Transducer with improved inductive coupling Transducer with improved inductive coupling

1991-06-26

1994-05-10

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Head

Core

360123, 360125, G11B 5147, G11B 517

Patent

active

053113861

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 the 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 the 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), Mowry
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.; A Yoke Magnetoresistive head for High Track Density Recording; IEEE; 1987; pp. 2503-2505.
W. W. Chow; Multi-Turn Core and Winding for Thin Film Inductive Head; IBM, Corp.; 1982; p. 4479.
Vinal, (IBM Technical Disclosure Bulletin, vol. 25, No. 7B, Dec. 1983).
Jeffers, "Magnetoresistive Transducer with Canted Easy Axis", IEEE Transactions on Magnetics, vol. MAG-15, No. 6, Nov. 1979, pp. 1628-1629.
Oshiki, "A Thin-Film Head for Perpendicular Magnetic Recording", J. Appl. Phys., 53(3), Mar. 1982, pp. 2593-2595.
Potter, "Self-Consistent Computer Calculations for Perpendicular Magnetic Recording", IEEE Transactions on Magnetics, vol. MAG-16, No. 5, Sep. 1980, pp. 967-972.
Shinagawa, "Simulation of Perpendicular Recording on Co-Cr Media with a Thin Permalloy Film-Ferrite Composite Head", J. Appl. Phys., 53(3), Mar. 1982, pp. 2585-2587.
Iwasaki, "An Analysis for the Magnetization Mode for High Density Magnetic Recording", IEEE Transactions on Magnetics, vol. MAG-13, No. 5, Sep. 1977, pp. 1272-1277.
Mallary et al., "Frequency Response of Thin-Film Heads with Longitudinal and Transverse Anisotropy", IEEE Transactions on Magnetics, vol. 26, No. 5, Sep. 1990, pp. 1334-1336.
Mallary et al., "Three-Dimensional Transmission Line Model for Flux Conduction in Thin-Film Recording Heads", J. Appl. Phys., 67(9), May 1990, pp. 4863-4865.
Mallary et al., "Conduction of Flux at High Frequencies by a Charge Free Magnetization Distribution", IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, 2374-2376.
Michael L. Mallary; "Conduction of Flux at High Frequencies in Permalloy Strips by Small-Angle Rotations"; J. Appl. Phys., 57(1), Apr. 15, 1985; pp. 3952-3954.
Lazzari et al., "A New Thin Film Head Generation", IEEE, pp. 3190-3193.

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