On the athermal character of structural phase transitions
Francisco J. Perez-Reche, Eduard Vives, Lluis Manosa, Antoni Planes
Abstract
The significance of thermal fluctuations on nucleation in structural first-order phase transitions has been examined. The prototype case of martensitic transitions has been experimentally investigated by means of acoustic emission techniques. We propose a model based on the mean first-passage time to account for the experimental observations. Our study provides a unified framework to establish the conditions for isothermal and athermal transitions to be observed.
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