Disorder-induced critical phenomena in magnetically glassy Cu-Al-Mn alloys
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 display...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/10539 |
| Acceso en línea: | https://hdl.handle.net/2445/10539 |
| Access Level: | acceso abierto |
| Palabra clave: | Histèresi Transformacions de fase (Física estadística) Aliatges Fenòmens crítics (Física) Materials magnètics Hysteresis Phase transformations (Statistical physics) Alloys Critical phenomena (Physics) Magnetic materials |
| Sumario: | 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. |
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