Magnetoresistive element

Details Magnetoresistive element Magnetoresistive element

1982-08-10

1984-10-16

Envall, Jr., Roy N.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

360113, 365158, G11B 530

Patent

active

044777949

ABSTRACT:
The invention provides a magnetoresistive element which magnetostatically has magnetic anisotropy to control a domain structure and which eliminates Barkhousen noise that will cause abrupt movement of domain walls and irregular magnetization due to a change in the signal magnetic field, wherein a grating pattern is formed on at least one surface of a magnetoresistive film by a process in which a grating pattern is unidirectionally formed on the surface of a substrate and the magnetoresistive film of a ferromagnetic body is deposited thereon. Further, various magnetoresistive elements to which a novel bias method is applied are provided.

REFERENCES:
patent: 4052748 (1977-10-01), Kuijk
patent: 4053829 (1977-10-01), Maruo
patent: 4321640 (1982-03-01), Van Gestel
patent: 4361805 (1982-11-01), Narimatsu et al.
patent: 4386114 (1983-05-01), Harms et al.
Metzdorf et al., "The Design of Magnetoresistive Multitrack Read Heads for Magnetic Tapes," IEEE Transactions for Magnetics, vol. Mag-18, No. 2, Mar. 1982, pp. 763-768.
Coker, "Eliminating Barkhausen Noise in a Megnetoresistive Reproducing Transducer", IBM Technical Disclosure Bulletin, vol. 16, No. 8, Jan. 1974, pp. 2571-2572.

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