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Evidence for a Structural Origin of Perpendicular Magnetic Anisotropy in PtxCo1−x Thin Film Alloys
Published online by Cambridge University Press: 15 February 2011
Abstract
XAFS analysis of the local structure about Pt and Co in PtxCo1−x, for x ˜ 0,7 revealed that the local coordination of Co and Pt is similar to that found in cubic L12 Pt3Co. In the plane of the films, significant Co-Co bonding was found- a feature not present in ordered L12 Pt3Co. The presence of Co-Co bonds, preferentially in-plane, suggest that clustering of Co into “sheets” or “chains” is the source of PMA in these films.
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