Cerruti, BenedettaVives i Santa-Eulàlia, Eduard2009-12-282009-12-2820080163-1829https://hdl.handle.net/2445/10586A model for the study of hysteresis and avalanches in a first-order phase transition from a single variant phase to a multivariant phase is presented. The model is based on a modification of the random-field Potts model with metastable dynamics by adding a dipolar interaction term truncated at nearest neighbors. We focus our study on hysteresis loop properties, on the three-dimensional microstructure formation, and on avalanche statistics.10 p.application/pdfeng(c) The American Physical Society, 2008HistèresiTransformacions de fase (Física estadística)Mecànica estadísticaPhase transformations (Statistical physics)HysteresisStatistical mechanicsinfo:eu-repo/semantics/article558491info:eu-repo/semantics/openAccess