Patent Number: 6,806,804

Title: Magnetic detecting element having .beta.-values selected for free magnetic layer and pinned magnetic layer

Abstract: The present invention provides a spin valve magnetic detecting element having large .DELTA.R. The positive or negative sign of the .beta. value of a magnetic material constituting each of a first free magnetic sub-layer, a second free magnetic sub-layer and a pinned magnetic layer is defined so that the resistance values for spin-up conduction electrons are smaller than the resistance values for spin-down conduction electrons in all magnetic layers when magnetization of a free magnetic layer is changed to minimize the resistance value. In this case, the change .DELTA.R in resistance of the magnetic detecting element can be increased.

Inventors: Saito; Masamichi (Niigata-ken, JP), Ide; Yosuke (Niigata-ken, JP), Hasegawa; Naoya (Niigata-ken, JP)

Assignee: Alps Electronics Co., Ltd.

International Classification: G11B 5/39 (20060101); G01R 33/06 (20060101); G01R 33/09 (20060101); H01F 005/00 ()

Expiration Date: 10/19/2021