Processing and Properties of Ferroelectric Bi4-x La xTi3O12 Ceramics


Article Preview

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 300°C for 1h followed by calcination at 800°C for 2h. The ceramics synthesized with cold isostatic pressing and sintering at 1150°C 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.



Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong




W. Wang et al., "Processing and Properties of Ferroelectric Bi4-x La xTi3O12 Ceramics", Key Engineering Materials, Vols. 368-372, pp. 106-108, 2008

Online since:

February 2008




[1] M. L. Calzada, I. B. Jimenez, H. Guillon, L. Pardo: Advanced Materials Vol. 18 (2004), p.16.

[2] L. Xie, J. Ma, Z. Zhao et al: Colloids and surfaces A Vol. 280 (2006), p.232.

[3] H. Wang, M.F. Ren: Materials Science and Engineering B Vol. 122 (2005): p.201.

[4] X. Wu, X. Lu et al: Applied Physics Letters, Vol. 86 (2005): p.092904.

[5] X. Hu, A. Garg, Z. H. Barber: Thin Solid Films Vol. 484 (2005): p.188 b) a) c) d).