Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1990-10-30
1992-10-13
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Hall effect
235449, G11B 533
Patent
active
051556430
ABSTRACT:
An unshielded horizontal magnetoresistive head for magnetic sensing and reading devices. The horizontal unshielded magnetoresistive head is comprised of two magnetoresistive elements separated by a gap and a conductive cross member which electrically connects the magnetoresistive elements together and to a common electrical point such as system ground. A differential voltage sensing circuit is connected across the magnetoresistive elements for sensing voltage variations when magnetic data is sensed by the head. The present invention further facilitates a more simplified fabrication process which results in cost savings and more efficient fabrication methods and procedures.
REFERENCES:
patent: Re33383 (1990-10-01), Lazzari
patent: 4465925 (1984-08-01), Goi
patent: 4473799 (1984-09-01), Favre
patent: 4487306 (1984-12-01), Nao et al.
patent: 4523330 (1985-06-01), Cain
patent: 4588292 (1986-05-01), Collins
patent: 4628194 (1986-12-01), Dobbins et al.
patent: 4723072 (1988-02-01), Naruse
patent: 4737649 (1988-04-01), Naruse
patent: 4749087 (1988-06-01), Buttifant
patent: 4851944 (1989-07-01), Mowry
patent: 4916295 (1990-04-01), Chominski
patent: 4988850 (1991-01-01), Masuda et al.
Chapman et al, "A New Horizontal M-R Head Stucture," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989.
Chapman, "A New Approach To Making Thin Film Head-Slider Devices," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989.
Indeck et al, "A Magnetoresistive Gradiometer," IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988.
Kelley et al, "High-Track-Density Coupled Film Magnetoresistive Head," IEEE Transactions on Magnetics, vol. Mag-17, No. 6, Nov. 1981.
O'Day, "Balanced Magnetic Head," IBM Technical Disclosure Bulletin, vol. 15, No. 9, Feb. 1973.
Lazzari et al, "A New Thin Film Head Generation IC Head," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989.
Heim, "The Sensitivity Function for Shielded Magnetoresistive Heads by Conformal Mapping," IEEE Transactions on Magnetics, vol. Mag-19, No. 5, Sep. 1983.
Gill et al, "A Magnetoresistive Gradiometer for Detection of Perpendicularly Recorded Magnetic Transactions," Journal of Applied Physics, vol. 65, No. 1, Jan. 1, 1989.
Van Ooyen et al, "Magnetoresistance in Laminated NiFe Films," Journal of Applied Physics, vol. 53, No. 3, Part II, Mar. 1982.
Mallinson, "`Gradiometer Head` Pulse Shapes," IEEE Transactions on Magnetics, vol. 26, No. 2, Mar. 1990.
Kelley et al, "Dual Element Unshielded Hall Head," IEEE Transactions on Magnetics, vol. Mag-20, No. 5, Sep. 1984.
Pohm et al, "0.075, 1.25 and 2.0 .mu.m Wide M-R Transducers," Journal of Magnetism and Magnetic Materials, vols. 54-57, Part III, Feb. 1986.
Jeffers, "High Density Magnetic Recording Head," Proceedings of the IEEE, vol. 74, No. 11, Nov. 1986.
Guzman Javier I.
Jones Jr. Robert E.
Kryder Mark H.
Mountfield Keith R.
Mars Incorporated
Wolff John H.
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