In Situ Transmission Electron Microscopy of Electric Field-Triggered Reversible Domain Formation in Bi-Based Lead-Free Piezoceramics
作者： Jens Kling , Xiaoli Tan , Wook Jo , Hans-Joachim Kleebe , Hartmut Fuess
DOI: 10.1111/J.1551-2916.2010.03778.X
关键词:
摘要: A lead-free piezoelectric 0.91(Bi1/2Na1/2)TiO3–0.06BaTiO3–0.03(K0.5Na0.5)NbO3 ceramic with high strain was examined in situ under an applied electric field using the transmission electron microscope. No domain structure is observed without field, but alternating leads to reversible formation of a lamellar structure. Correlations polarization and hysteresis loop measurements indicate field-induced phase transition from nonpolar ferroelectric state vice versa.
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