Domain structure and perpendicular magnetic anisotropy in CoFe/Pd multilayers using off-axis electron holography

David J. Smith; Desai Zhang; Justin M. Shaw; Martha R. McCartney

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Domain structure and perpendicular magnetic anisotropy in CoFe/Pd multilayers using off-axis electron holography

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arxiv 1502.01422 v1 pith:2ITOC7XZ submitted 2015-02-05 cond-mat.mtrl-sci

Desai Zhang , Justin M. Shaw , David J. Smith , Martha R. McCartney This is my paper

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keywords magneticelectronmicroscopyco90fe10domainlayermultilayersperpendicular

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Multilayers of Co90Fe10/Pd with different bilayer thicknesses, have been deposited by dc-magnetron sputtering on thermally oxidized Si wafers. Transmission electron microscopy showed that the highly textured crystalline films had columnar structure, while scanning transmission electron microscopy and atomic force microscopy respectively indicated some layer waviness and surface roughness. The magnetic domain structure and perpendicular magnetic anisotropy (PMA) of the Co90Fe10/Pd multilayers were investigated by off-axis electron holography and magnetic force microscopy. The Co90Fe10 layer thickness was the primary factor determining the magnetic domain size and the perpendicular magnetization: both decreased as the thickness increased. The strongest PMA was observed in the sample with the thinnest magnetic layer of 0.45 nm.

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