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Ferroelectricity of nanocrystalline BaTiO3 ceramics by first principle calculation
  • 时间:0
  • 分类:TQ174.756[化学工程—陶瓷工业;化学工程—硅酸盐工业] TQ132.35[化学工程—无机化工]
  • 作者机构:[1]Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources, Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Resources, Materials and Chemical Engineering Institute, Hainan University, Haikou 570228, China, [2]College of Physics and Electronic Information, Tianjin Normal University, Tianjin 300387, China, [3]Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • 相关基金:This work was supported by the National Basic Research Program of China (2002CB613301), the National Natural Science Foundation of China (50872094) and Hainan University Research Fund.
  • 相关项目:功能陶瓷
中文摘要:

在不同水晶的阶段的 BaTiO3 的震动的模式借助于密度被调查了功能的理论假潜在的方法。证据对四角形对为陶艺进一步表明的 8 nm BaTiO3 在场的菱形的阶段转变斜方晶、斜方晶在 8 nm BaTiO3 陶艺从的类似的连续转变对斜方晶、四角形、立方的转变菱形作为在粗糙的 BaTiO3 陶艺的那些。

英文摘要:

The vibrational modes of BaTiO3 in different crystalline phases have been investigated by means of density functional theory pseudo potential method. The evidence of tetragonal to orthorhombic and orthorhombic to rhombohedral phase transitions present for 8 nm BaTiO3 ceramics further demonstrates that the similar successive transitions in 8 nm BaTiO3 ceramics from rhombohedral to orthorhombic, tetragonal and cubic transitions are as those in coarse BaTiO3 ceramics.

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