Improvement in CPP-GMR read head sensor performance using [001]-oriented polycrystalline half-metallic heusler alloy Co ₂ FeGa 0.5 Ge 0.5 and CoFe bilayer electrode

A current-perpendicular-to-plane giant magnetoresistive (CPP-GMR) device with a half-metallic electrode is one of the most promising candidates of next-generation read head for hard disk drive. In this study, we fabricate [001]-oriented polycrystalline CPP-GMR devices with the normal ferromagnet (NFM) CoFe/half-metallic ferromagnet (HMFM) Co