| 摘要 |
A magnetoresistance sensor structure has a free layer including a Co-Fe free-layer film. The Fe content is from about 12 to about 16 atomic percent, producing a saturation magnetostriction value from about -1x10<-6 >to about -2x10<-6>. Where the free layer includes only the Co-Fe free-layer film as a ferromagnetic layer, the Fe content of the Co-Fe free-layer film is from about 13 to about 14 atomic percent. Where the free layer has the Co-Fe free-layer film and a Ni-13.5 atomic percent Fe free-layer film, the Fe content is from about 12 to about 16 atomic percent.
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