Patent ID: 6482329
Filing Date: 2002-11-19
Classification: B82Y,H01F,H01L

Abstract:
A method of manufacturing a magneto-resistance element of a structure in which ferromagnetic layers are laminated a plurality of times on a surface of a substrate body putting non-magnetic layers therebetween, comprising steps of:depressurizing an inside of a deposition chamber in which said non-magnetic layers and said ferromagnetic layers are formed to an ultimate degree of vacuum at a level of 10âˆ’9 Torr or less; introducing a gas a containing at least oxygen or water into said deposition chamber to change the ultimate degree of vacuum inside the deposition chamber to a certain pressure higher than the level of 10âˆ’9 Torr, then, introducing a gas b consisting of Ar, and carrying out plasma etching processing of the surface of said substrate body using a mixed gas of said gas a and said gas b, and sputtering prescribed targets in said deposition chamber using the mixed gas of said gas a and said gas b to form said non-magnetic layers and said ferromagnetic layers by a sputtering technique on the substrate body processed by said plasma processing.