@article{82c220450da54ff18c5a80e6d94a79a2,
title = "Evidence for FeO formation at the Fe/MgO interface in epitaxial TMR structure by X-ray photoelectron spectroscopy",
abstract = "Epitaxial Fe/MgO/Fe tunnelling magnetoresistance (TMR) structure was grown on the MgO substrate by molecular beam epitaxy, characterized in-situ by reflection high-energy electron diffraction and ex-situ by high-resolution transmission electron microscopy. The chemical states at the Fe/MgO interface have been investigated by X-ray photoelectron spectroscopy (XPS) and peak decomposition technique. The results show that there is FeO formation at interface of Fe/MgO, clearly identified by the existence of Fe2+ and Fe3+ peaks at 708.2 and 710.4 eV, respectively, which locate at the high-energy side of the main metallic Fe peak. The presence of FeO layer at the Fe/MgO interface proved by XPS is likely to have considerable influence on its MR value and hence on its application in spintronics.",
keywords = "Interface chemical reaction, Magnetic tunnelling junction (MTJ), X-ray photoelectron spectroscopy (XPS)",
author = "Wang, {S. G.} and G. Han and Yu, {G. H.} and Y. Jiang and C. Wang and A. Kohn and Ward, {R. C.C.}",
note = "Funding Information: The authors are grateful to Mr. Keith Belcher for technical support and to the engineering and physical sciences research council (EPSRC) for financial support.",
year = "2007",
month = mar,
doi = "10.1016/j.jmmm.2006.10.767",
language = "אנגלית",
volume = "310",
pages = "1935--1936",
journal = "Journal of Magnetism and Magnetic Materials",
issn = "0304-8853",
publisher = "Elsevier B.V.",
number = "2 SUPPL. PART 3",
}