Your focus will be to further develop our existing COMSOL-based finite element method (FEM) implementation of a phase field model, and to employ it for investigating the link between microstructure and macroscopic performance. After completing the development and validation of the model, you will use it to simulate the behavior of artificially generated or experimentally extracted microstructures. The output of the model is a visualization of ferroelectric domains, their motion, and their interaction with grain boundaries and other local defects present in the microstructure. Moreover, the model predicts the electric and electro-elastic hysteretic behavior of the material, from which one can extract the relevant figures of merit (e.g. remanence, coercivity, and piezoelectric coupling coefficients)

Requirements:

PhD degree in physics, astronomy, mathematics, engineering, computer science or similar; Ideally, experience with the following physics topics: theory of ferroelectricity, linear elasticity, piezoelectricity, and Gibbs-like theories (e.g. micromagnetism or Landau-Ginzburg-Devonshire theory); Experience with mathematical models, ideally calculus of variations and/or dynamical systems; Preferably, experience with numerical simulations such as Finite Element Methods (FEM); Preferably, experience with coding, e.g. MATLAB, Python or Fortran or similar

Text:

Postdoc in phase-field modelling of piezoelectric materials Your focus will be to further develop our existing COMSOL-based finite element method (FEM) implementation of a phase field model, and to employ it for investigating the link between microstructure and macroscopic performance. After completing the development and validation of the model, you will use it to simulate the behavior of artificially generated or experimentally extracted microstructures. The output of the model is a visualization of ferroelectric domains, their motion, and their interaction with grain boundaries and other local defects present in the microstructure. Moreover, the model predicts the electric and electro-elastic hysteretic behavior of the material, from which one can extract the relevant figures of merit (e.g. remanence, coercivity, and piezoelectric coupling coefficients) PhD degree in physics, astronomy, mathematics, engineering, computer science or similar; Ideally, experience with the following physics topics: theory of ferroelectricity, linear elasticity, piezoelectricity, and Gibbs-like theories (e.g. micromagnetism or Landau-Ginzburg-Devonshire theory); Experience with mathematical models, ideally calculus of variations and/or dynamical systems; Preferably, experience with numerical simulations such as Finite Element Methods (FEM); Preferably, experience with coding, e.g. MATLAB, Python or Fortran or similar

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