Patent ID: 8563147
Filing Date: 2013-10-22
Classification: B82Y,G11B,Y10T

Abstract:
1. A hard bias structure for providing longitudinal bias to a free layer in an adjacent sensor element in a magnetic recording device wherein said sensor element has a plurality of layers, a top surface, a first sidewall adjoining a first side of the free layer, and a second sidewall adjoining a second side of the free layer, comprising: (a) a composite seed layer including at least a lower Ta layer formed on a substrate and a metal (M1) layer having a fcc(111) or hcp(001) crystal structure disposed on the lower Ta layer; said composite seed layer has a horizontal section formed in a plane that is parallel to the planes of the plurality of layers in said sensor element and a second section formed along the sensor sidewalls and connected to the horizontal section; and (b) a pair of (R1/R2)