Ferroelectric and structural antiphase domains in hexagonal RMnO 3
Ferroelectric and structural antiphase domains in hexagonal RMnO 3
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DOI：
10.1557/opl.2012.448
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Keisuke L. I. Kobayashi;T. Koyama;Y. Horibe;T. Katsufuji;S. Cheong;S. Mori
中科院分区：
文献类型：
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作者：
Keisuke L. I. Kobayashi;T. Koyama;Y. Horibe;T. Katsufuji;S. Cheong;S. Mori
通过获得各种电子衍射花样、暗场像和高分辨点阵像，研究了六方晶系RMnO3（R=Y，Ho，Lu，Yb）单晶的特征铁电畴和结构反相畴结构。在铁电相R MnO3中，除了（001）晶面外，（110）晶面还存在由6个铁电畴和结构反相畴组成的特征畴结构，即“三叶草”型畴结构，这是六方晶系R MnO3铁电相所固有的。在（110）面内具有三叶草图案的畴结构中，结构反相边界倾向于平行于[001]方向。
We have investigated characteristic ferroelectric and structural antiphase domain structures in single crystals of hexagonal R MnO 3 (R=Y, Ho, Lu, and Yb) by obtaining various electron diffraction patterns, dark-filed images and high-resolution lattice images. In the ferroelectric phase of R MnO 3 characteristic domain structures consisting of six ferroelectric and structural antiphase domains, which can be identified as the “cloverleaf” pattern, is found in the (110) plane, in addition to the (001) plane, and are inherent to the ferroelectric phase of hexagonal R MnO 3 . In domain configuration with the cloverleaf pattern in the (110) plane, the structural antiphase boundaries are inclined to be parallel to the [001] direction.