“All-Heusler alloy” current-perpendicular-to-plane giant magnetoresistance

Nikolaev, Konstantin; Kolbo, Paul; Pokhil, Taras; Xilin Peng; Yonghua Chen; Ambrose, Thomas; Mryasov, Oleg
June 2009
Applied Physics Letters;6/1/2009, Vol. 94 Issue 22, p222501
Academic Journal
A materials system of ternary full Heusler alloys exhibiting substantial current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) has been theoretically proposed and experimentally realized. Observed trends in magnetoresistance are broadly consistent with the modeling results. A CPP-GMR of 6.7% and ΔRA of 4 mΩ μm2 have been demonstrated in the bottom spin-valve configuration. The spin-stand testing of narrow-track recording heads confirmed compatibility of these materials with hard disk drive reader technology.


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