Journal
SCRIPTA MATERIALIA
Volume 145, Issue -, Pages 50-53Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.10.006
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Funding
- EAgLE international project (FP7-REGPOT) [316014]
- Polish Ministry of Science and Higher Education [2819/7.PR/2013/2]
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X-ray photoelectron spectroscopy (XPS) studies of Au/Co/Au(0.3 nm)/MgO and Au/Co/MgO systems were conducted in order to monitor the electronic structure modification at Co/MgO interface with/without gold interlayer. A detailed analysis of Co 2p states revealed that the amount of minor oxygen contribution at Co/MgO interface decreased after the Au interlayer was added. The obtained XPS results together with density functional theory (DFT) allowed explanation of the increase of surface anisotropy energy in the sample with the gold interlayer in terms of (i) noble and transitional metal d-d orbital hybridization; (ii) interfacial Co 3d and O 2p; and (iii) interface imperfection. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
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