Patent ID: 6754048
Filing Date: 2004-06-22
Classification: B82Y,C10M,G01R,G11B,H01F,H01L,Y10T

Abstract:
A multiple magnetoresistive (MR) layer magnetoresistive (MR) sensor element comprising:a substrate; a patterned first magnetoresistive (MR) layer formed over the substrate; a first magnetic longitudinal bias layer formed contacting the patterned first magnetoresistive (MR) layer, the first magnetic longitudinal bias layer having a first magnetic bias direction; a patterned second magnetoresistive (MR) layer separated from the patterned first magnetoresistive (MR) layer by at least a non-magnetic spacer layer; and a second magnetic longitudinal bias layer formed contacting the patterned second magnetoresistive (MR) layer, the second magnetic longitudinal bias layer having a second magnetic bias direction, wherein: the first magnetic longitudinal bias layer and the second magnetic longitudinal bias layer are formed of a single magnetic bias material; the first magnetic bias direction and the second magnetic bias direction are non-parallel and aligned at an acute angle with a longitudinal axis along which said bias layers are separated.