Extended Data Fig. 3: Planar HAADF-STEM images before and after 350 °C, 450 °C air heat treatment.
From: Thermal triggering for multi-state switching of polar topologies
Images showing (a) initial polar vortices, (b) polar wave state and (c) polar soliton state. The operation was done in a tube furnace. The cooling times were around 30 min.
