| 摘要 |
PURPOSE:To increase the regenerative sensitivity of a magnetoresistance effect element and to contrive the extension of element usage by a method wherein the magnetoresistance effect element and a high-magnetic permeability magnetic substance are contacted. CONSTITUTION:A plane having the fixed width GL gap of a core 7 consisting of a high-magnetic permeability magnetic substance filled with a nonmagnetic substance 6 is formed in flat plane and an MR stripe 1 having broader width W than width GL is formed on oblong shape to directly contact the side end of the stripe 1 with the core 7 at the opposite sides of the gap. The electric resistance value of the core 7 consisting of the high-magnetic permeability magnetic substance is made a value of one figure or more higher than the electric resistance of the MR strip 1. And a winding 8 is applied to the core 7 to flow a DC current into the winding 8 and a bias magnetic field is generated on the core 7 and an AC bias magnetic field is also generated by flowing an AC current into the winding 8. And the regenerative sensitivity of the MR stripe 1 is increased to expand element usage by forming the DC bias or AC bias magnetic field. |
