Mesoscopic Modelling of Strain Glass

Lloveras, Pol; Castán, Teresa; Porta, Marcel; Saxena, Avadh; Planes, Antoni

doi:10.1007/978-3-319-96914-5_9

Cited by 1 publication

(1 citation statement)

References 106 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More recently it has been shown to occur in some ferroelastic/martensitic systems as well, [10] where it takes place mainly due to kinetic arrest rather than geometrical frustration. [11][12][13] In these materials it has been reported that above a certain critical amount of disorder, which has been shown to depend on the strength of an anisotropic long-range elastic interaction, [13] the transition to the twinned ferroelastic structure is suppressed and glassy behavior ensues giving rise to a strain glass phase. [6,[14][15][16] Glassy behavior occurs because while local transformations to the ferroic phase take place at short time scales, coalescence into a global phase requires much longer times, which tend to diverge as temperature is lowered.…”

Section: Introductionmentioning

confidence: 99%

Intermittent dynamics in externally driven ferroelastics and strain glasses

et al. 2018

View full text Add to dashboard Cite

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.

show abstract