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Experimental evidences for universality of acoustic emission avalanche distributions during structural transitions Carrillo Galdó, Lluís Mañosa, Lluís Ortín, Jordi, 1959- Planes Vila, Antoni Vives i Santa-Eulàlia, Eduard Equacions d'estat Ciència dels materials Transformacions de fase (Física estadística) Equations of state Materials science Phase transformations (Statistical physics) Acoustic emission avalanche distributions are studied in different alloy systems that exhibit a phase transition from a bcc to a close-packed structure. After a small number of thermal cycles through the transition, the distributions become critically stable (exhibit power-law behavior) and can be characterized by an exponent alpha. The values of alpha can be classified into universality classes, which depend exclusively on the symmetry of the resulting close-packed structure. 2010-06-08T10:06:00Z 2010-06-08T10:06:00Z 1998 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0031-9007 https://hdl.handle.net/2445/12794 147484 eng Reproducció digital del document publicat en format paper, proporcionada per APS i http://dx.doi.org/10.1103/PhysRevLett.81.1889 Physical Review Letters, 1998, vol. 81, núm. 9, p. 1889-1892 http://dx.doi.org/10.1103/PhysRevLett.81.1889 (c) American Physical Society, 1998 info:eu-repo/semantics/openAccess 4 p. application/pdf American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)