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2018-09-28

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/135437

Intermitten dynamics in externally driven ferroelastics and strain glasses

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https://doi.org/10.1103/PhysRevE.98.032143

Abstract

The interplay of elastic anisotropy and disorder dictates many of the properties of ferroic materials, specifically martensites. We use a phase-field model for ferroelastic athermal materials to study their response to an increasing external stress that couples to the strain order parameter. We show that these systems evolve through avalanches and study the avalanche-size distribution for ferroelastic systems (large anisotropy and/or small disorder) and for the strain glass (small anisotropy and/or large disorder) using various statistical analysis techniques, including the maximum likelihood method. The model predicts that in the former case the distribution is subcritical or power law (in agreement with experimental observations), whereas in the latter case it becomes supercritical. Our results are consistent with experiments on martensitic materials, and we predict specific avalanche behavior that can be tested and used as an alternative means to characterize strain glasses.

Subject

Elasticitat, Vidre, Ciència dels materials, Ferro

Subject (English)

Elasticity, Glass, Materials science, Iron

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Articles publicats en revistes (Física de la Matèria Condensada)
Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

PORTA TENA, Marcel, et al. Intermitten dynamics in externally driven ferroelastics and strain glasses. Physical Review e. 2018. Vol. 98, num. 032143-1-032143-10. ISSN 2470-0045. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/135437

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