Marcos, JordiVives i Santa-Eulàlia, EduardMañosa, LluísAcet, MehmetDuman, EyüpMorin, MichelNovák, VáclavPlanes Vila, Antoni2009-12-282009-12-2820030163-1829https://hdl.handle.net/2445/10539Measurements of magnetic hysteresis loops in Cu-Al-Mn alloys of different Mn content at low temperatures are presented. The loops are smooth and continuous above a certain temperature, but exhibit a magnetization discontinuity below that temperature. Scaling analysis suggest that this system displays a disorder-induced phase transition line. Measurements allow one to determine the critical exponents ß=0.03±0.01 and ß¿=0.4±0.1, which coincide with those reported recently in a different system, thus supporting the existence of universality for disorder-induced critical points.5 p.application/pdfeng(c) The American Physical Society, 2003HistèresiTransformacions de fase (Física estadística)AliatgesFenòmens crítics (Física)Materials magnèticsHysteresisPhase transformations (Statistical physics)AlloysCritical phenomena (Physics)Magnetic materialsinfo:eu-repo/semantics/article513166info:eu-repo/semantics/openAccess