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

Published

Author(s)

Justin M. Shaw, Desai Zhang, David Smith, Martha McCartney

Abstract

Multilayers of Co90Fe10/Pd with different Co90Fe10 alloy thicknesses, which are expected to show perpendicular magnetic anisotropy, 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 observations by scanning transmission electron microscopy indicated some interdiffusion between the Co90Fe10 and Pd layers. 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. It was confirmed that 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 magnetic layer thickness of 0.45nm.
Citation
Journal of Applied Physics
Volume
388

Keywords

Off-axis electronholography, CoFe/Pd multilayers, Perpendicular magneticanisotropy Magnetic domainstructure, Perpendicular magneticanisotropy, Magnetic domainstructure

Citation

Shaw, J. , Zhang, D. , Smith, D. and McCartney, M. (2015), Domain structure and perpendicular magnetic anisotropy in CoFe/Pd multilayers using off-axis electron holography, Journal of Applied Physics, [online], https://doi.org/10.1016/j.jmmm.2015.04.015 (Accessed June 13, 2024)

Issues

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Created August 15, 2015, Updated November 10, 2018