Patent ID: 6137662
Filing Date: 2000-10-24
Classification: B82Y,G01R,G11B

Abstract:
A magnetoresistive sensor comprising:a magnetoresistive sensing element;a first nonmagnetic layer contacting said magnetoresistive sensing element;a first antiferromagnetic layer contacting said first nonmagnetic layer such that said first nonmagnetic layer is sandwiched between said magnetoresistive sensing element and said first antiferromagnetic layer;a first ferromagnetic soft adjacent layer contacting said first antiferromagnetic layer such that said first antiferromagnetic layer is sandwiched between said nonmagnetic layer and said first soft adjacent layer;a second nonmagnetic layer contacting said magnetoresistive sensing element such that said magnetoresistive sensing element is sandwiched between said first nonmagnetic layer and said second nonmagnetic layer;a second antiferromagnetic layer contacting said second nonmagnetic layer such that said second nonmagnetic layer is sandwiched between said second antiferromagnetic layer and said magnetoresistive sensing element;a second ferromagnetic soft adjacent layer contacting said second antiferromagnetic layer such that said second antiferromagnetic layer is sandwiched between said second nonmagnetic layer and said second soft adjacent layer; anda third antiferromagnetic layer contacting said first soft adjacent layer such that said first soft adjacent layer is sandwiched between said first antiferromagnetic layer and said third antiferromagnetic layer.