Polarization Switching Dynamics of Ferroelectric (Bi_0.5Na_0.5)TiO₃ Single Crystals

Abstract:

Ferroelectric (Bi_0.5Na_0.5)TiO₃ single 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 at ex-situ electric 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>_c It is concluded that the polarization reversal is achieved through non-180 ° (71 ° and 109 °) domain switching in the BNT crystals along <100>_c.

• Periodical: Key Engineering Materials (Volume 582)
• Pages: 51-54
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.582.51
• Online since: September 2013
• Authors: Ken Yanai, Hiroaki Onozuka, Yuuki Kitanaka, Yuji Noguchi, Masaru Miyayama, Chikako Moriyoshi, Yoshihiro Kuroiwa
• Keywords: Bismuth, Ferroelectric, Lead-Free, Single Crystal, Synchrotron Radiation

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