Local Structure Analysis of BaTiO3 Nanoparticles

Local Structure Analysis of BaTiO3 Nanoparticles
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BaTiO3 纳米颗粒的局部结构分析

DOI:
10.7567/jjap.52.09kf01
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发表时间:
2013
影响因子:
1.5
通讯作者:
K. Kato
K. Kato
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Y. Yoneda;S. Kohara;K. Kato

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利用高能X射线衍射、X射线吸收精细结构和原子对分布函数分析技术研究了纳米BaTiO_3粉体的原子尺度结构。研究表明,这些材料在纳米尺度上是有序的。BaTiO 3的三维原子有序度平均为立方,但局部显示轻微的四方扭曲,类似于粗晶粒块状晶体中发生的。铁电相干性部分地通过控制颗粒形态来促进。合作铁电扭曲的空间范围被发现在纳米尺寸的建筑块退化。所获得的新结构信息有助于人们更好地理解这些纳米材料的介电性质。
The atomic-scale structure of nanocrystalline BaTiO3 powders has been studied using high-energy X-ray diffraction, X-ray absorption fine structure, and atomic pair-distribution function analysis techniques. Studies show that the materials are well-ordered at nanometer distances. The three-dimensional atomic ordering in BaTiO3 is cubic on average, but locally shows slight tetragonal distortions, similarly to that occurring in coarse-grained bulk crystals. Ferroelectric coherence is facilitated in part by control of the particle morphology. The spatial extent of cooperative ferroelectric distortions is found to be degraded in nanometer-sized building blocks. The new structural information obtained helps one to understand better the dielectric properties of these nanomaterials.
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DOI: --
发表时间: --
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影响因子: --
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通讯作者: --
DOI: 10.1063/1.2179971
发表时间: 2006-03-01
影响因子: 3.2
作者:
Hoshina, T;Kakemoto, H;Yashima, M
通讯作者: Yashima, M
DOI: 10.1063/1.1935132
发表时间: 2005-07
影响因子: 3.2
作者:
M. Yashima;T. Hoshina;Daiju Ishimura;Syuuhei Kobayashi;Wataru Nakamura;T. Tsurumi;S. Wada
通讯作者: M. Yashima;T. Hoshina;Daiju Ishimura;Syuuhei Kobayashi;Wataru Nakamura;T. Tsurumi;S. Wada
DOI: --
发表时间: 2006
期刊: Jpn. J. Appl. Phys. 45,9B
影响因子: --
作者:
Y. Yoneda;S. Kohara and J. Mizuki
通讯作者: S. Kohara and J. Mizuki