Patent ID: 6153062
Filing Date: 2000-11-28
Classification: B82Y,G01R,G11B,G11C,H01F,H01L

Abstract:
A method of manufacturing a magnetoresistive effect device, said method comprising:forming a first antiferromagnetic layer made of a PtMn alloy on a substrate by a DC magnetron sputtering process,forming a first pinned magnetic layer on said first antiferromagnetic layer in direct contact by a DC magnetron sputtering process,forming a first non-magnetic electrically conductive layer on said first pinned magnetic layer,forming a free magnetic layer on said first non-magnetic electrically conductive layer,forming a second non-magnetic electrically conductive layer on said free magnetic layer,forming a second pinned magnetic layer on said second non-magnetic electrically conductive layer by a DC magnetron sputtering process,forming a second antiferromagnetic layer made of a PtMn alloy on said second pinned magnetic layer in direct contact by a DC magnetron sputtering process, andheat-treating said first antiferromagnetic layer, said first pinned magnetic layer, said second pinned magnetic layer, and said second antiferromagnetic layer in a magnetic field at a temperature of between 210.degree. C. and 250.degree. C.