Flux cancelling yoke type magnetic transducer head

A yoke type magnetic transducer head utilizing a magnetoresistance effect comprising:

• a lower soft magnetic core and an upper soft magnetic core forming an operating gap at one end thereof facing a traveling magnetic recording medium,
• said upper soft magnetic layer having a cut away portion therein dividing a front core portion and a rear core portion,
• a magnetoresistance sensing portion provided to said cut away portion to magnetically bridge said front core portion and said rear core portion thus forming a closed magnetic path of said lower soft magnetic core, said operating gap, said front core portion, said magnetoresistance sensing portion and said rear core portion,
• a first bias magnetic field means generated by applying current at least through said magnetoresistance sensing portion, passing magnetic flux generated by said first bias magnetic field means along one direction in said magnetoresistance sensing portion and said upper and lower magnetic core portions,
• and a second bias magnetic field means generated by a hard magnetic layer provided adjacent to said magnetoresistance sensing portion, passing magnetic flux along said one direction in said magnetoresistance sensing portion and along another direction in said upper and lower magnetic core portions to at least partially cancel said magnetic flux generated by said first magnetic field means in said upper and lower core portions.