Flux cancelling yoke type magnetic transducer head

Details Flux cancelling yoke type magnetic transducer head Flux cancelling yoke type magnetic transducer head

1986-03-19

1988-03-29

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Magnetometers

360113, 338 32R, G01R 3302, H01L 4300, G01B 533, G01B 5127

Patent

active

047346442

ABSTRACT:
A yoke type magnetic transducer head utilizing a magnetoresistance effect in which a magnetoresistance effect sensing portion is provided so as to magnetically couple a cut-away portion in a magnetic circuit including an operation gap and a magnetic yoke having in its one portion the cut-away portion and in which a first bias magnetic field is applied to the magnetoresistance effect sensing portion by a first magnetic flux that is generated when a current is flowed through the magnetoresistance effect sensing portion, or when a current is flowed through both the magnetoresistance effect sensing portion and a bias conductor, which includes a hard magnetic layer for generating a second magnetic flux by which a second bias magnetic field is applied to the magnetoresistance effect sensing portion and for passing through the magnetic yoke a magnetic flux which cancels at least a part of the first magnetic flux which passes through the magnetic yoke.

REFERENCES:
patent: 4354212 (1982-10-01), Nouchi et al.

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