Preparation of nanocrystalline BaTiO3 ceramics

• 来源期刊: 中国科学E辑（英文版）
• 年，卷（期）: 2009,（6）
• 页码范围: 1730-1734
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11431-009-0033-4

摘要

The high-dense nanocrystalline BaTiO3 (BT) ceramics with grain size smaller than 100 nm have been successfully prepared by the two step sintering and the spark plasma sintering (SPS) process. The successive transitions in nanograin BT ceramics from rhombohedrel to orthorhombic, tetragonal and cubic transitions, similar to those in coarse BT ceramics, were revealed by in-situ temperature dependent Raman spectrum. The multiphase coexistence and the diffused phase transition character were demonstrated in the 8 nm nanocrystalline BT ceramics.