Magnetoresistance effect element

Details Magnetoresistance effect element Magnetoresistance effect element

1992-01-22

1993-09-07

Lateef, Marvin M.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

H01L 4300

Patent

active

052433161

ABSTRACT:
There is provided a magnetoresistance effect element which is a multilayer structure body wherein a first magnetic film layer made of Ni-rich Ni-Co-Fe having a thickness of 10 to 100 .ANG. and a second magnetic film layer made of Co-rich Co-Ni-Fe having a thickness of 10 to 100 .ANG., which are different from each other in coercive force, are integrally laminated with a non-magnetic metal film layer having a thickness of 10 to 100 .ANG. interposed therebetween. The non-magnetic metal film layer is of a metal, for example, Cu, Ag, Au, Pt, Ru or Re. (Ni.sub.A Co.sub.1-A).sub.B Fe.sub.1-B, Ni.sub.A Fe.sub.1-A or Ni.sub.A Co.sub.1-A is used as a material of the first magnetic film, and (Co.sub.C Ni.sub.1-C).sub.D Fe.sub.1-D is used as a material of the second magnetic film.

REFERENCES:
Hirsch, et al., "Origin of Interfacial Energy in Coupled Films of Permalloy and Cobalt," IEEE Transactions on Magnetics, vol. MAG-5, No. 3, Sep. 1969.

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