Patent ID: 9406320
Filing Date: 2016-08-02
CPC Classification: G11B

Claim Text:
1. An apparatus, comprising: a scissor sensor stack, comprising: a soft bias layer positioned behind the scissor sensor stack in an element height direction, the soft bias layer comprising a soft magnetic material; and a hard bias layer, at least a portion thereof being positioned behind the soft bias layer in the element height direction, the hard bias layer comprising a hard magnetic material having an initialization magnetization that is perpendicular to a media-facing surface of the apparatus to provide unidirectional anisotropy to the soft bias layer, wherein at least one portion of an upper surface of the hard bias layer is positioned closer to the media-facing surface of the apparatus than any portion of a lower surface of the hard bias layer, and wherein at least one portion of a lower surface of the soft bias layer is positioned farther from the media-facing surface of the apparatus than any portion of an upper surface of the soft bias layer.