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From: High capacitive energy-storage in BNT-based Pb-free relaxors via dispersing strong long-range polarization within expanded lattice framework

High capacitive energy-storage in BNT-based Pb-free relaxors via dispersing strong long-range polarization within expanded lattice framework

Figure 2. Microscopic structure of BNT-BT-0.1BS ceramic observed by electron microscopy. (A) High-resolution TEM image and corresponding IFFT pattern in the inset; (B and C) SAED patterns along the [001]_c and [110]_c directions; (D) HAADF-STEM image recorded along the [100]_c direction and the corresponding atomic displacement vector mapping; (E-G) Enlarged B-site displacement vectors of the boxed region in (D). Corresponding (H) c/a ratio, and (I) atomic intensity mapping of (D). BNT: Bi_0.5Na_0.5TiO₃; BT: BaTiO₃; BS: BaSnO₃; TEM: transmission electron microscope; IFFT: inverse fast Fourier transform; SAED: selected area electron diffraction; HAADF-STEM: high-angle annular dark-field scanning transmission electron microscopy.