Fig. 3: Local compositional inhomogeneity of BSTN-Ta ceramics.

a Atomic-resolution HAADF-STEM image along [110]c and [001]c of TTBs in BSTN-0.1Ta sample; (b) EDS elemental mapping from (a2); (c, d) Displacement of B-site cations corresponding to different polarization directions in BSN and BST along [110]c.