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Revista mexicana de física
Print version ISSN 0035-001X
Abstract
VERDIN, E. and ESCUDERO, R.. Electrical and magnetic properties of UFex compounds. Rev. mex. fis. [online]. 2004, vol.50, n.1, pp.64-69. ISSN 0035-001X.
UFex alloys with compositions from x = 1.60 to 13.20 at. % of Fe, are superconducting with maximum transition temperature, Tc = 3.59 K. X-ray diffraction analysis, shows the existence of different compositions with formula α-U+Fe and solubility limit close to x = 1.76 ± 0.87 at. % Fe. With increasing Fe the solid solution U6Fe phase forms and coexists with the metastable α-U+Fe until it saturates. The annealing process to the samples accelerates the formation of U6Fe, modifying substantially the magnetic characteristics, but without changing its superconducting transition.
Keywords : Superconductivity; Magnetism; Heavy Fermions; U alloys.