Driving rate effects in avalanche-mediated first-order phase transitions

Francisco Jose Perez-Reche, Bosiljka Tadic, Lluis Manosa, Antoni Planes, Eduard Vives

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Abstract

We study the driving-rate and temperature dependence of the power-law exponents that characterize the avalanche distribution in first-order phase transitions. Measurements of acoustic emission in structural transitions in Cu-Zn-Al and Cu-Al-Ni are presented. We show how the observed behavior emerges within a general framework of competing time scales of avalanche relaxation, driving rate, and thermal fluctuations. We confirm our findings by numerical simulations of a prototype model.

Original languageEnglish
Article number195701
Number of pages4
JournalPhysical Review Letters
Volume93
Issue number19
DOIs
Publication statusPublished - 5 Nov 2004

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