Gorria, PedroMartínez Blanco, DavidBlanco, Jesús A.Hernando Grande, AntonioGaritaonandia, José S.Fernández Barquín, LuisCampo, JavierSmith, Ronald I.2023-06-202023-06-202004-061098-012110.1103/PhysRevB.69.214421https://hdl.handle.net/20.500.14352/52099©2004 The American Physical Society The work was partially supported by the Research Grants No. MAT2002-04178-C04 and No. MAT2000-1047 and by EU under IHP programme. We also thank the ILL and the CRG-D1B, together with ISIS for the allocation of neutron beam time, and the SCT at the University of Oviedo for the high resolution XRD facility. D.M.-B. thanks Spanish MCyT for additional support.Both Cu and Fe metals, with face-centered cubic (fcc) crystal structures, are nonmagnetic. However, the substitution of Cu atoms by Fe in the fcc-Cu lattice leads to the formation of a random solid solution and the appearance of ferromagnetic order, with a value of the magnetic moment per Fe atom in a fcc environment even above 2µ_ß. This striking behavior is closely related to magnetovolume effects (Invar), which we have detected by means of lattice thermal expansion and magnetization measurements in FeCu alloys.engjournal articlehttp://dx.doi.org/10.1103/PhysRevB.69.214421https://journals.aps.orgopen access538.9Magnetic-propertiesImmiscible elementsCu alloysIronPressureBehaviorOriginFísica de materialesFísica del estado sólido2211 Física del Estado Sólido