PROJECT TITLE :

Perpendicular Magnetic Anisotropy in Face-Centered Cubic (111) Co90Fe10/Pt Superlattices

ABSTRACT:

Ultrathin (Co90Fe10/Pt)8 superlattices composed of alternating CoFe (thickness 0.21 nm) and Pt (thickness 0.twenty three nm) monolayers were deposited by magnetron sputtering. Superlattices deposited at ultralow sputtering power and high Ar pressure showed perpendicular magnetic anisotropy (PMA) whereas superlattices deposited at higher power and lower pressure and a cosputtered Pt-CoFe alloy film exhibited in-plane magnetic anisotropies. X-ray diffraction and atomic force microscopy showed that the PMA was mainly contributed by the interface anisotropy at Pt/CoFe interfaces. The PMA constant of the superlattice (Co90Fe10/Pt) 8 deposited underneath optimized conditions is as high as erg/cm3.