Electronic and magnetic properties of the Ag-doped Fe3O4 films studied by x-ray absorption spectroscopy

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Title:	Electronic and magnetic properties of the Ag-doped Fe3O4 films studied by x-ray absorption spectroscopy
Authors:	Liu, S. H.;Tsai, H. M.;Pao, C. W.;Chiou, J. W.;Ling, D. C.;Pong, Way-faung;Tsai, M. H.;Lin, H. J.;Jang, L. Y.;Lee, J. F.;Hsu, J. H.;Wang, W. J.;Hsu, C. J.
Contributors:	淡江大學物理學系
Date:	2006-08-28
Issue Date:	2009-12-31 10:37:01 (UTC+8)
Publisher:	College Park: American Institute of Physics
Abstract:	The electronic and magnetic properties of Ag-doped Fe3O4 films were studied by x-rayabsorption near-edge structure (XANES), extended x-rayabsorption fine structure (EXAFS), and x-ray magnetic circular dichroism (XMCD) measurements. A comparison between the AgK K -edge EXAFS Fourier transform spectra of Ag-doped Fe3O4 and the Ag metal shows that Ag atoms aggregate into Ag granules. The O K K-edge and AgL3-edge XANES spectra consistently indicate an electron transfer from the Fe3O4 host into Ag granules. The Fe L3,2-edge XMCD spectra and hysteresis measurements reveal that Ag granules reduce the average magnetic moment of Fe ions and the saturation magnetization of Fe3O4.
Relation:	Applied Physics Letters 89(9), 092112(3page)
DOI:	10.1063/1.2338889
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article [Graduate Institute & Department of Chemistry] Journal Article

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