Polar domain structural evolution under electric field and temperature in the (Bi _0.5 Na _0.5 )TiO ₃ ‐0.06BaTiO ₃ piezoceramics

Lead‐free bismuth sodium titanate and related compounds are of great interest as promising candidates for piezoelectric applications. However, the full understanding of this family of materials is still a challenge partly because of their structural complexity and different behaviors with or without the application of an external electric field. Here, piezoresponse force microscopy is used to gain insight into the mesoscopic‐scale domain...