Microstructure Characteristics and Electrical Properties of Sintered (Bi,La)4Ti3O12 Ferroelectric Ceramics
1mm-thick BLT ceramics were sintered in accordance with a bulk ceramic fabrication process. All XRD peaks detected in the sintered ceramics were indexed as the Bi-layered perovskite structure without secondary phases. Density was increased with increasing the sintering temperature up to 1050°C and the maximum value was about 98% of the theoretical density. The remanent polarization (2Pr) value of BLT ceramic sintered at 1050°C was approximately 6.5 μC/cm2 at the applied voltage of 4.5kV. The calculated electromechanical couping factor (kt) of it was about 5% and the mechanical quality factor (Qm) was about 2200. From these results, a BLT ceramic target for plused laser deposition (PLD) system was successfully fabricated.
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
H.S. Yoo et al., "Microstructure Characteristics and Electrical Properties of Sintered (Bi,La)4Ti3O12 Ferroelectric Ceramics", Materials Science Forum, Vols. 534-536, pp. 565-568, 2007