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Title: Disorder-induced critical phenomena in magnetically glassy Cu-Al-Mn alloys
Author: Marcos, Jordi
Vives i Santa-Eulàlia, Eduard
Mañosa, Lluís
Acet, Mehmet
Duman, Eyüp
Morin, Michel
Novák, Václav
Planes Vila, Antoni
Keywords: Histèresi
Transformacions de fase (Física estadística)
Fenòmens crítics (Física)
Materials magnètics
Phase transformations (Statistical physics)
Critical phenomena (Physics)
Magnetic materials
Issue Date: 2003
Publisher: The American Physical Society
Abstract: 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.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 2003, vol. 67, núm. 22, p. 224406-1-224406-5
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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