In Situ Transmission Electron Microscopy of Electric Field-Triggered Reversible Domain Formation in Bi-Based Lead-Free Piezoceramics
In Situ Transmission Electron Microscopy of Electric Field-Triggered Reversible Domain Formation in Bi-Based Lead-Free Piezoceramics
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DOI：
10.1111/j.1551-2916.2010.03778.x
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发表时间：
2010-09
影响因子：
3.9
通讯作者：
J. Kling;X. Tan;W. Jo;H. Kleebe;H. Fuess,;J. Rödel
中科院分区：
文献类型：
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作者：
J. Kling;X. Tan;W. Jo;H. Kleebe;H. Fuess,;J. Rödel
利用透射电子显微镜对高应变无铅0.91(Bi1/2Na1/2)TiO3–0.06BaTiO3–0.03(K0.5Na0.5)NbO3压电陶瓷在外加电场作用下进行了原位观察。在没有电场的情况下，没有观察到磁畴结构，但交变电场导致了可逆的层状磁畴结构的形成。与极化和应变磁滞回线测量的关联表明，电场诱导的相变从非极态到铁电态，反之亦然。
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 an electric field, but an alternating electric field leads to the reversible formation of a lamellar domain structure. Correlations to polarization and strain hysteresis loop measurements indicate an electric field-induced phase transition from a nonpolar to a ferroelectric state and vice versa.