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Perpendicular magnetic anisotropy of full-Heusler films in Pt/Co2FeAl/MgO trilayers

Published 18 Feb 2011 in cond-mat.mtrl-sci and cond-mat.mes-hall | (1102.3802v1)

Abstract: We report on perpendicular magnetic anisotropy (PMA) in a Pt/Co2FeAl/MgO sandwiched structure with a thick Co2FeAl layer of 2-2.5 nm. The PMA is thermally stable that the anisotropy energy density Ku is 1.3{\times}106 erg/cm3 for the structure with 2 nm Co2FeAl after annealing at 350 oC. The thicknesses of Co2FeAl and MgO layers greatly affect the PMA. Our results provide an effective way to realize relative thick perpendicularly magnetized Heusler alloy films.

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