| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7920748 | Journal of Physics and Chemistry of Solids | 2015 | 6 Pages |
Abstract
Structure, composition and chemical behavior of co-sputtered Fe-Nb thin films are analyzed by different techniques, as conversion electron Mössbauer spectroscopy, x-ray photoelectron spectroscopy and x-ray diffraction. It is shown that oxygen is determinative in hindering the Fe-Nb alloy formation and, as a result, Fe1âxO and Nb2O5 occur in significant amounts, even in vacuum. In spite of the oxygen role, a Fe-Nb alloy is formed in little amounts, which increase as the Nb content is increased. The increase of the Nb content is also related with the increase of Fe1âxO and with a decreasing of the metallic Fe present. Mössbauer data indicate the Fe-Nb phase present is the Fe2Nb Laves phase.
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Materials Science
Electronic, Optical and Magnetic Materials
Authors
M.J.M. Pires, W.A.A. Macedo, L.P. Cavalcanti, A. Magnus G. Carvalho,