title: Observation of the segregation and the dissolution of the Co and the Cu in CoCu metastable alloys.
abstract: Metastable Co(x)Cu100-x(x=5, 10, 15, 20) alloys have been annealed at increasing temperatures in order to study the evolution of the Co cluster and its relation with the magnetotransport properties. The structure was investigated by X-ray Absorption Spectroscopy on the Co K-edge as a function of composition and annealing temperature.  An anomalous trend in the structural evolution has been evidenced and related to the preculiar features observed in the magnetotransport properties.
authors.affiliation: Departamento de Electricidad y Electrónica, Universidad del País Vasco, Bilbao, Spain. malu@we.lc.ehu.es
authors.forename: M L
authors.initials: ML
authors.lastname: Fdez-Gubieda
authors.forename: A
authors.initials: A
authors.lastname: García Prieto
authors.forename: A
authors.initials: A
authors.lastname: García Arribas
authors.forename: C
authors.initials: C
authors.lastname: Meneghini
authors.forename: S
authors.initials: S
authors.lastname: Mobilio