Fig. 4
From: Configurable topological textures in strain graded ferroelectric nanoplates

Phase field simulation of a radial quadrant domain structure. a Schematic for the system setting of phase field simulation. b Distributions of vertical shear strains ε yz and εxz at bottom interface. c Three-dimensional view of the stabilised quadrant domain texture. The white arrows indicate the IP polarisation directions. d IP ferroelectric polarisation map on the top surface. The contrast represents the OOP polarisation