Processing and Properties of Ferroelectric Bi4-x La xTi3O12 Ceramics |
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| Journal | Key Engineering Materials (Volumes 368 - 372) |
|---|---|
| Volume | High-Performance Ceramics V |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 106-108 |
| DOI | 10.4028/www.scientific.net/KEM.368-372.106 |
| Citation | Wen Wang et al., 2008, Key Engineering Materials, 368-372, 106 |
| Online since | February, 2008 |
| Authors | Wen Wang, Hua Ke, Deng Guo Zhang, De Chang Jia, Yu Zhou |
| Keywords | Bi4-xLaxTi3O12, Dielectric Constant, La Doping, Microstructure |
| Abstract | Bi4-xLaxTi3O12 (BLT, x=0, 0.75, 1, 2) ceramic powders were prepared with sol-gel and solid phase reaction processes, respectively. BLT powders were synthesized after decarbonization at 300ºC for 1h followed by calcination at 800ºC for 2h. The ceramics synthesized with cold isostatic pressing and sintering at 1150ºC exhibit a perovskite-like structure. The influence of sintering parameters and La doping content on density, microstructure and dielectric properties of the BLT were discussed. With the increase of La doping content in Bi4-xLaxTi3O12, dielectric constant increases and dielectric loss gradually decreases. The dielectric constant and dielectric loss of Bi4-xLaxTi3O12 (x=2) are 132.7 and 0.012 at 100 KHz, respectively. |
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