Observation of rhombohedral nanostructures in the orthorhombic phase of KNbO3 using convergent-beam electron diffraction
Observation of rhombohedral nanostructures in the orthorhombic phase of KNbO3 using convergent-beam electron diffraction
复制标题
使用会聚束电子衍射观察斜方相 KNbO3 中的菱形纳米结构
DOI：
10.1063/1.4791679
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发表时间：
2013
影响因子：
4
通讯作者：
Michiyoshi Tanaka
中科院分区：
文献类型：
--
作者：
K. Tsuda;R. Sano;Michiyoshi Tanaka
利用会聚束电子衍射研究了铌酸钾（KNbO3）的菱形相和正交相中纳米尺度局部结构的对称性。在KNbO3的正交相中发现了具有菱形对称的纳米局部结构。研究发现，KNbO3的正交相结构是具有菱形对称的两种变体的平均值。这表明正交相和菱形相之间的相变具有有序-无序的特点。结果类似于BaTiO3的情况，我们已经报道过[Tsuda et al., Phys.]。[j].中国生物医学工程学报，2012,31(2):481 - 481。
Symmetries of nanometer-scale local structures in the rhombohedral and orthorhombic phases of potassium niobate (KNbO3) have been examined using convergent-beam electron diffraction. Nanometer-size local structures with rhombohedral symmetry have been discovered in the orthorhombic phase of KNbO3. It has been found that the structure of the orthorhombic phase of KNbO3 is formed as an average of two variants with rhombohedral symmetry. This fact indicates that the phase transformation between the orthorhombic and rhombohedral phases has an order-disorder character. The result is analogous to the case of BaTiO3, which we already reported [Tsuda et al., Phys. Rev. B 86, 214106 (2012)].
影响因子：
8.6
作者：
K. Namikawa;M. Kishimoto;K. Nasu;E. Matsushita;R. Tai;K. Sukegawa;H. Yamatani;H. Hasegawa;M. Nishikino;M. Tanaka;K. Nagashima
通讯作者：
K. Namikawa;M. Kishimoto;K. Nasu;E. Matsushita;R. Tai;K. Sukegawa;H. Yamatani;H. Hasegawa;M. Nishikino;M. Tanaka;K. Nagashima