One of its main advantages is that time-dependent simulations become feasible, which makes it possible to address long-standing questions of pattern stability and pattern evolution. It has been shown that the phase-field method based on Ginzburg-Landau-Devonshire theory is a powerful tool for predicting the formation of domain structures under different boundary conditions, and the structure-property relationship learned from phase-field simulations can be utilized to design high-performance ferroelectrics. In this topic, we will implement the time-dependent Ginzburg-Landau (TDGL) equations using semi-implicit spectral method in commercial Matlab or open-source Python. Especially, the following tasks will be included:
- Phase-field simulation of 90 degree ferroelectric domain formation and it’s evolution under electric fields.
- Simulation of properties such as polarization and strain loops.
- Exploring the influence of defects (eg. dislocation, dislocation loops) on domain switching.
- Visualization of simulated results using open-source Paraview.
Supervisor & Contact: Dr. Fangping Zhuo, email@example.com-…