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We disclose a CPP GMR structure where multiple CoFeO layers are introduced in the Cu spacer to enhance dR/R.
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CPP GMR WITH HIGHER dR/R CONFIGURATION
The structure of the CPP GMR with mulitple CoFeO layers is: NiFeCr/NiFe/PtMn/CoFe/Ru/CoFe/Cu/CoFeO/Cu/CoFeO/Cu/CoFeO/Cu/CoFe/NiFe/Ta Each CoFeO layer is about 5 to 10 A thick and adjacent Cu layers are also about 5 to
10 A thick. The multiple CoFeO layers enhance dR/R through their added contribution to spin dependent scattering of the electrons.