Amorphous phases and piezoelectricity in (Na0.5Bi0.5)0.94Ba0.06TiO3-Bi12TiO20 flexoelectric-type nanocomposite ceramics
Amorphous phases and piezoelectricity in (Na0.5Bi0.5)0.94Ba0.06TiO3-Bi12TiO20 flexoelectric-type nanocomposite ceramics
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DOI：
10.1016/j.scriptamat.2010.03.057
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发表时间：
2010-07
影响因子：
6
通讯作者：
Ming‐lei Zhao;Lihai Wang;Chun-lei Wang;Jialiang Zhang;Z. Gai;Chunming Wang;Jichao Li
中科院分区：
文献类型：
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作者：
Ming‐lei Zhao;Lihai Wang;Chun-lei Wang;Jialiang Zhang;Z. Gai;Chunming Wang;Jichao Li
采用常规烧结工艺制备了具有宏观界面和净宏观极化的（Na_（0.5）Bi_（0.5））Ba_（0.06）TiO_3-Bi_（12）TiO_（20）复合陶瓷。所有的粗晶粒被发现有纳米网络的表面，这意味着在这种陶瓷中的非晶相的含量相对较高。由于这些界面相关的非晶相分布在整个陶瓷的非均匀性，我们建议，宏观极化是由于部分对齐的扭曲TiO 6八面体和扭曲的BiO 5多面体的非晶相。
(Na0.5Bi0.5)0.94Ba0.06TiO3-Bi12TiO20composite ceramics, which display macroscopic interfaces and have a net macroscopic polarization, were fabricated by an ordinary sintering technique. All the coarse grains were found to have nano-networked surfaces, implying a relatively high content of amorphous phases in this kind of ceramic. Because these interface-related amorphous phases are distributed non-homogeneously throughout the ceramic, we propose that the macroscopic polarization is due to partial alignment of the distorted TiO6octahedra and the distorted BiO5polyhedra in the amorphous phases.