Driving rate effects in avalanche-mediated first-order phase transitions.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Physical review letters
دوره 93 19 شماره
صفحات -
تاریخ انتشار 2004