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Experimental evidences for universality of acoustic emission avalanche distributions during structural transitions

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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.

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Reproducció digital del document publicat en format paper, proporcionada per APS i http://dx.doi.org/10.1103/PhysRevLett.81.1889

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Transformacions de fase (Física estadística)

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Experimental evidences for universality of acoustic emission avalanche distributions during structural transitions