Recent topics on metastability, hysteresis, avalanches, and acoustic emission associated to martensitic transitions in functional materials

Details Recent topics on metastability, hysteresis, avalanches, and acoustic emission associated to martensitic transitions in functional materials Recent topics on metastability, hysteresis, avalanches, and acoustic emission associated to martensitic transitions in functional materials

2010-09-14

arxiv.org/abs/1009.2621v2

Physics

Condensed Matter

Materials Science

24 pages, 11 figures, intended as a chapter in book "Disorder and Strain induced complexity in functional materials" (This ver

Scientific paper

We review some results for the dynamics of first-order phase transitions in functional materials. We especially focus on simple models of athermal evolution in driven ferromagnets that give a global picture of metastability and hysteresis, showing that first-order phase transitions in such systems proceed by avalanches. Within this theoretical framework, we then discuss recent experiments on acoustic emission avalanches in structural phase transitions.

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