X-ray absorption spectroscopy study of FePt thin films

Autor:	Aline Y. Ramos, Márcia Carvalho de Abreu Fantini, A. Martins, Abel D. Santos, R.J. Prado, N. M. Souza-Neto
Rok vydání:	2006
Předmět:	Diffraction X-ray absorption spectroscopy Materials science Condensed matter physics Extended X-ray absorption fine structure X-ray crystallography Analytical chemistry General Physics and Astronomy Thin film Polarization (electrochemistry) Spectroscopy XANES
Zdroj:	Journal of Applied Physics. 100:013905
ISSN:	1089-7550 0021-8979
Popis:	Equiatomic FePt thin films with fcc or L10 structure were studied by x-ray-absorption spectroscopy. The extended x-ray-absorption fine structure and x-ray-absorption near edge structure analysis, sensitive to the local structure and chemical order, show the formation of a Fe-rich neighborhood around Fe, indicating segregation of atomic species inside the film, and not a random distribution, as pointed out in the literature. The polarization dependence of the extended x-ray-absorption fine structure signal reveals and quantifies the different chemical and local order inside the samples, for both kinds of structure. The results are correlated with the long-range structural order measured by x-ray diffraction and magnetic properties of the material.
Databáze:	OpenAIRE
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