Driving Rate Effects in Avalanche-Mediated First-Order Phase Transitions

Francisco-José Pérez-Reche, Bosiljka Tadić, Lluís Mañosa, Antoni Planes, and Eduard Vives
Phys. Rev. Lett. 93, 195701 – Published 3 November 2004

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.

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  • Received 4 June 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.195701

©2004 American Physical Society

Authors & Affiliations

Francisco-José Pérez-Reche1, Bosiljka Tadić2, Lluís Mañosa1, Antoni Planes1, and Eduard Vives1,*

  • 1Departament d’Estructura i Constituents de la Matèria, Universitat de Barcelona, Diagonal 647, Facultat de Física, 08028 Barcelona, Catalonia, Spain
  • 2Department for Theoretical Physics, Jozef Stefan Institute, P.O.Box 3000, SI-1001, Ljubljana, Slovenia

  • *Electronic address: eduard@ecm.ub.es

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Vol. 93, Iss. 19 — 5 November 2004

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