Patent ID: 6364964
Filing Date: 2002-04-02
Classification: B82Y,G11B,H01F,H01L,Y10T

Abstract:
A method of manufacturing a spin valve magnetoresistive effect element with a non-magnetic metallic thin-film layer, first and second ferromagnetic thin-film layers formed to sandwich said non-magnetic metallic thin-film layer and an anti-ferromagnetic thin-film layer formed in contact with a surface of said second ferromagnetic thin-film layer, said surface being opposite to said non-magnetic metallic thin-film layer, said first ferromagnetic thin-film layer having a two-layers structure of a NiFe layer and a CoFe layer, said method comprising the steps of:depositing said first ferromagnetic thin-film layer, said non-magnetic metallic thin-film layer, said second ferromagnetic thin-film layer and said anti-ferromagnetic thin-film layer; and thereafter, annealing said deposited layers so that change in magnetostriction depending upon variation of a thickness of said NiFe layer becomes small.