Effect of a Gold Overlayer Contamination on the Growth and Magnetic Properties of Au/Co/Au(111)

C. Chacon; Y. Nahas; Y. Girard; J. Lagoute; V. Repain; S. Rousset

doi:10.1380/ejssnt.2010.21

Conference -ACSIN-10-

Effect of a Gold Overlayer Contamination on the Growth and Magnetic Properties of Au/Co/Au(111)

C. Chacon, Y. Nahas, Y. Girard, J. Lagoute, V. Repain, S. Rousset

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Keywords: Scanning Tunneling Microscopy, Surface structure, Morphology, Roughness and topography, Gold, Cobalt, Magnetic, structural, and other properties of nanostructures

JOURNAL FREE ACCESS

2010 Volume 8 Pages 21-26

DOI https://doi.org/10.1380/ejssnt.2010.21

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Abstract

The presence of chlorine in gold is found to modified drastically the growth mode of Au on a Au(111) substrate. Whereas pure gold can grow layer by layer by step flow, contaminated gold is found to make random and/or vacancy islands and to modify the Au(111) herringbone reconstruction structure. The influence of a contaminated gold capping on the magnetic properties of cobalt ultrathin films has been investigated by in situ Magneto Optical Kerr Effect measurements. Surprisingly, the interface anisotropy is found to be of opposite sign as compared to the one of pure gold and thus favoring an in-plane magnetization. [DOI: 10.1380/ejssnt.2010.21]

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