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(Color online) Polarization properties of poled BiT crystals measured along the axis at .
(Color online) Leakage current density along the axis of the BiT crystals annealed under various conditions.
(Color online) (a) In-plane PFM image on the surface of poled as-grown BiT crystals, (b) out-of-plane PFM image in the same area, (c) the schematic of the domain structure of the dotted square, and (d) the schematic of the three-dimensional domain structure adjacent to the crystal surface. The arrows and the symbols denote the directions of and , respectively. In (c), The dashed line represents 90° domain wall and the solid line denotes domain wall (labeled as 1 and 2).
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