Domain structure of adaptive orthorhombic phase in [110]-poled Pb(Mg1/3Nb2/3)O3-30.5% PbTiO3 single crystal
Domain structure of adaptive orthorhombic phase in [110]-poled Pb(Mg1/3Nb2/3)O3-30.5% PbTiO3 single crystal
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DOI：
10.1063/1.2906365
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发表时间：
2008-04
影响因子：
4
通讯作者：
Hui Wang;Jing Zhu;Xiaowei Zhang;Y. Tang;H. Luo
中科院分区：
文献类型：
--
作者：
Hui Wang;Jing Zhu;Xiaowei Zhang;Y. Tang;H. Luo
用分析透射电子显微镜研究了[110]极化Pb（Mg_1Sn_3Nb_2Sn_3）O_3 - 30.5%PbTiO_3中正交相的畴结构。会聚束电子衍射分析表明，正交相是一个自适应相组成的四个纳米畴，而在宏观尺度上，它似乎是正交的，由于平均效应。当沿[110]方向沿着极化时，[100]极化的纳米畴的体积比变得等于[010]极化的纳米畴的体积比。纳米畴壁被钉扎，这可能是正交相压电性能较低的原因之一。
The domain structure of orthorhombic phase in [110]-poled Pb(Mg1∕3Nb2∕3)O3–30.5%PbTiO3 has been studied with analytical transmission electron microscopy. Convergent beam electron diffraction analysis indicates that the orthorhombic phase is an adaptive phase composed of tetragonal nanodomains while in the macroscopic scale it appear as orthorhombic due to an average effect. When poled along [110] direction, the volume ratio of the nanodomains with [100] polarization becomes equal to that of the nanodomains with [010] polarization. The nanodomain walls seem pinned, which may be a reason of the lower piezoelectric properties of orthorhombic phase.