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X-ray photoelectron spectroscopy analysis as a tool to assess factors influencing magnetic anisotropy type in Co/MgO system with gold interlayer

Demchenko, I, Syryanyy, Y, Melikhov, Yevgen, Nittler, L, Gladczuk, L, Lasek, K, Cozzarini, L, Dalmiglio, M, Goldoni, A, Konstantynov, P and Chernyshova, M 2018. X-ray photoelectron spectroscopy analysis as a tool to assess factors influencing magnetic anisotropy type in Co/MgO system with gold interlayer. Scripta Materialia 145 , pp. 50-53. 10.1016/j.scriptamat.2017.10.006

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Abstract

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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: Q Science > QC Physics
Publisher: Elsevier
ISSN: 1359-6462
Date of First Compliant Deposit: 15 November 2017
Date of Acceptance: 6 October 2017
Last Modified: 17 Oct 2018 17:37
URI: http://orca.cf.ac.uk/id/eprint/105797

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