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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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CARRILLO GALDÓ, Lluís, et al. Experimental evidences for universality of acoustic emission avalanche distributions during structural transitions. Physical Review Letters. 1998. Vol. 81, num. 9, pags. 1889-1892. ISSN 0031-9007. [consulted: 28 of June of 2026]. Available at: https://hdl.handle.net/2445/12794

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