Seedlayer interface enhanced magnetic anisotropy in CoPt (0002)-textured films (original) (raw)

Abstract

The effects of interface roughness of Ta seedlayer on the structural and magnetic properties of Co 72 Pt 28 (20 nm)/Ru(30 nm)/Pt(2 nm)/Ta(5 nm)/glass were investigated. Uniaxial perpendicular magnetic anisotropy (8.6 Â 10 6 ergs/cc), coercivity (5.5 kOe) and nucleation field (À2.8 kOe) in the Co 72 Pt 28 thin film sputter-deposited on relatively smooth surface of Ta seedlayer were achieved. The results showed that relatively smoother interface roughness of Ta seedlayer improved the CoPt/Ru (0 0 0 2) texture and magnetic properties.

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