Patent ID: 6995957
Filing Date: 2006-02-07
Classification: B82Y,G01R,G11B

Abstract:
1. A magnetoresistive sensor, comprising: a magnetoresistive sensor stack responsive to an external magnetic field; first and second magnetic shields, wherein said magnetoresistive sensor stack is disposed between said first and second magnetic shields; a first insulating layer disposed between said magnetoresistive sensor stack and said first magnetic shield; a second insulating layer disposed between said magnetoresistive sensor stack and said second magnetic shield; a high resistance soft magnetic layer disposed between at least one of said insulating layers and one of said magnetic shields closest thereto; wherein said high resistance soft magnetic layer has a magnetic moment greater than about 80 emu/cc, wherein said high resistance soft magnetic layer has a composition of A-B-C where A is Co, B is selected from the group consisting of Hf, Y, Ta, and Zr, and C is N.