Abstract
Ferroelectric (Bi0.5Na0.5)TiO3single crystals were grown by a top-seeded solution growth method at a high oxygen pressure of 0.9 MPa and their polarization switching dynamics were investigated atex-situelectric fields along <100>c. Synchrotron radiation single-crystal X-ray diffraction analyses showed that a splitting of each reflection into four spots were clearly observed during polarization reversal. This splitting is associated with the polarization states with the spontaneous polarization vectors along four directions of equivalent <111>cIt is concluded that the polarization reversal is achieved through non-180 ° (71 ° and 109 °) domain switching in the BNT crystals along <100>c.
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