Patent ID: 7283335
Filing Date: 2007-10-16
Classification: B82Y,G01R,G11B

Abstract:
1. A magnetic detecting element comprising: a multilayer film comprising a first antiferromagnetic layer, a pinned magnetic layer, a nonmagnetic layer, and a free magnetic layer, which are laminated in that order from below; ferromagnetic layers formed on two side portions of the free magnetic layer over nonmagnetic intermediate layers; second antiferromagnetic layer formed on the ferromagnetic layers with a spacing greater than the spacing between the ferromagnetic layers in the track width direction, so that the ferromagnetic layers have extending portions extending from the inner ends of the respective second antiferromagnetic layers toward the center in the track width direction within both side portions; and insulating layers extending above the second antiferromagnetic layers and the extending portions of the ferromagnetic layers; an upper electrode extending above the insulating layers and the multilayer film between the insulating layers; a lower electrode formed below the multilayer film.