Dresden 2011 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 3: Dielectric and ferroelectric thin films 2

DF 3.1: Hauptvortrag

Montag, 14. März 2011, 14:45–15:25, MÜL Elch

Advances of and by phase-field modelling in condensed matter physics — •Heike Emmerich — Lehrstuhl Matrial- und Prozesssimulation Universität Bayreuth

Phase-field modelling as it is understood today is still a young discipline in condensed matter physics, which established itself for that class of systems in condensed matter physics, which can be characterised by domains of different phases separated by a distinct interface. Driven out of equilibrium their dynamics results into the evolution of those interfaces, during which those might develop into well defined structures with characteristic length-scales at the nano-, micro- or meso-scale. Since the material properties of such systems are to a large extend determined by those small scale structures, acquiring a precise understanding of the mechanisms that drive the interfacial dynamics is a great challenge for scientists in this field. Phase-field modelling is an approach that allows to tackle this challenge simulation-based. This contribution provides a critical overview over the conceptual background of the phase-field method, the most relevant fields of condensed matter physics, approached by phase-field modelling until now, as well as the respective model formulations and the insight gained via their simulation and analysis so far. Moreover, it discusses directions of further development and the quality of the scientific contributions to be expected from those, highlightening them via examples from advances in nucleation theory and austenite-martensite type transitions.