X-ray absorption spectroscopy of Mg doped Fe3O4 thin films

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Title:	X-ray absorption spectroscopy of Mg doped Fe3O4 thin films
Authors:	張經霖;Chang, C. L.;Liu, Y. S.;Chen, J. L.;Chen, C. L.;Dong, C. L.;Lee, D. S.;Chern G.
Contributors:	淡江大學物理學系
Keywords:	Transition metal oxides;Thin films;Electronic structure;XANES;Synchrotron radiation
Date:	2007-09-13
Issue Date:	2009-12-31 10:14:33 (UTC+8)
Publisher:	Elsevier
Abstract:	The electronic structure of Mg doped Fe3O4 thin films were studied by X-ray absorption near edge structure (XANES). Measurements were performed near Mg, O and Fe K-edges. Mg K-edge spectra show a gradual evolution from a much broader three-feature structure into characteristic MgO spectrum as x varies from 0.1 to 1. The O K-edge XANES spectra indicate that the Fe 3d–O 2p hybridized states decrease as Mg concentration increases. Results of Fe K-edge XANES reveal the Mg was doped preferably into B-site more. All spectra indicate the change of crystal and electronic structure from spinel to rocksalt, start at x > 0.5.
Relation:	Journal of alloys and compounds 442(1-2), pp.259-261
DOI:	10.1016/j.jallcom.2006.10.174
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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