Computational and experimental investigation of the crystal orientation control effect on the electric permittivity and magnetic permeability of multiferroic composite materials
Computational and experimental investigation of the crystal orientation control effect on the electric permittivity and magnetic permeability of multiferroic composite materials
复制标题
晶体取向控制对多铁复合材料介电常数和磁导率影响的计算和实验研究
DOI：
10.1007/s00707-015-1526-9
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Kazuyoshi Tsuchiya
中科院分区：
文献类型：
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作者：
Yasutomo Uetsuji;Takeshi Wada;Yasuyuki Uekita;Jiro Terada;Kazuyoshi Tsuchiya
本文通过计算和实验研究了由铁电相和铁磁相组成的多晶多铁复合材料通过极化和磁化处理控制晶体取向对物理性能的影响。在计算中，采用渐近均质化理论来实现宏观结构和微观结构之间的尺度桥接。假设通过垂直或水平方向上的外部电场和磁场的组合在两个相中完美地完成了畴切换，则微观结构晶体取向被理想地排列。比较了 BaTiO3/CoFe2O4 复合材料具有不同晶体取向控制的各种微观结构的均匀物理性能，特别是介电常数和磁导率。计算确定了晶体取向控制对物理性质的影响的上限。另一方面，我们以极化磁化处理工艺为例，通过实验验证了晶体取向控制的效果。具体而言，通过湿法混合、成型和烧结工艺制备BaTiO3/Ni0.5Zn0.5Fe2O4复合材料，然后在垂直方向上进行电极化，在水平方向上进行磁化。物理性能测量表明，通过极化和磁化处理，介电常数和磁导率的面内分量增加，面外分量减少。实验结果与计算结果定性一致。
In this paper, the effect of crystal orientation control through polarization and magnetization treatments on physical properties was computationally and experimentally investigated for polycrystalline multiferroic composite materials consisting of ferroelectric and ferromagnetic phases. In the calculations, asymptotic homogenization theory was employed for scale-bridging between macrostructures and microstructures. The microstructural crystal orientations were ideally arranged on the assumption that the domain switching was perfectly done in both phases by a combination of external electric and magnetic fields in the vertical or horizontal direction. The homogenized physical properties, especially the electric permittivity and magnetic permeability, were compared among various microstructures with differently controlled crystal orientations for a BaTiO3/CoFe2O4composite material. The computation identified an upper limit of the effect of crystal orientation control on physical properties. On the other hand, we focused on a polarization and magnetization treatment process as a case study, and then experimentally verified the effect of crystal orientation control. Specifically, a BaTiO3/Ni0.5Zn0.5Fe2O4composite material was prepared through a wet mixing, molding, and sintering process, and then, it was poled electrically in the vertical direction and magnetically in the horizontal direction. Physical property measurements indicated that the in-plane components of the electric permittivity and magnetic permeability were increased, and the out-of-plane components were decreased by the polarization and magnetization treatments. The experimental results were qualitatively consistent with the computational results.
基于二维和三维电子背散射衍射测量微结构的压电材料的多尺度有限元模拟
DOI：
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发表时间：
2012
期刊：
影响因子：
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作者：
Y. Uetsuji;S. Kimura;H. Kuramae;K. Tsuchiya;M. Kamlah
通讯作者：
M. Kamlah
DOI：
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发表时间：
2015
期刊：
影响因子：
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作者：
Tatsuya Oka;Yasutomo Uetsuji;Hiroyuki Kuramae;Kazuyoshi Tsuchiya
通讯作者：
Kazuyoshi Tsuchiya
晶体均匀化方法对压电材料铁电性能的数值研究
DOI：
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发表时间：
2004
期刊：
Modelling and Simulation in Materials Science and Engineering 12
影响因子：
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作者：
Yasutomo Uetsuji;Yukihiro Nakamura;Sei Ueda;Eiji Nakamachi
通讯作者：
Eiji Nakamachi