Title:
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Disorder-induced critical phenomena in magnetically glassy Cu-Al-Mn alloys
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Author:
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Marcos, Jordi; Vives i Santa-Eulàlia, Eduard; Mañosa, Lluís; Acet, Mehmet; Duman, Eyüp; Morin, Michel; Novák, Václav; Planes Vila, Antoni
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Other authors:
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Universitat de Barcelona |
Abstract:
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Measurements 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. |
Subject(s):
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-Histèresi -Transformacions de fase (Física estadística) -Aliatges -Fenòmens crítics (Física) -Materials magnètics -Hysteresis -Phase transformations (Statistical physics) -Alloys -Critical phenomena (Physics) -Magnetic materials |
Rights:
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(c) The American Physical Society, 2003
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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