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(a) Part A is the dynamic variation in electrical current and transmissivity of detecting green beam of 514.5 nm in poling process with constant voltage on face of a 0.3 mm thick sample, and Part B in back-switch poling process with constant voltage. (b) The static transmission spectrum curves of electrode area before and after DI.
The image of the face after poling and etching. A’s color is dark orange; B’s color is pale yellow after DI. The two right figures are the microstructure images of the B&A-boundary magnified by 500, focused on B and A, respectively.
Optical micrographs of the domain structures in face after etching: (a) PDS, (b) BPDS. They are magnified by 312.5.
The proposed ferroelectric microstructure model of crystals.
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