Preparation of Bi4Ti3O12 Based Thick Films by Screen Printing
Bi4Ti3O12 based thick films were prepared by screen printing and firing using Pt bottom electrodes and ZrO2 substrates. The influence of excess Bi2O3 as sintering aid was investigated. Furthermore, substitution of Ti-site and Bi-site for V5+ and Nd3+ was performed. Screen-printable pastes were prepared by kneading the Bi4Ti3O12 based powder and Bi2O3 powder in a three-roll mill with an organic vehicle. The microstructures and ferroelectric properties of the thick films were examined in comparison with bulk ceramics. The remanent polarization of 9.6 μC/cm2 and coercive field of 64 kV/cm were obtained for the Bi3.0Nd1.0Ti2.99V0.01O12 thick film with 10 wt% of excess Bi2O3 fired at 1200OC.
K. Katayama, K. Kato, T. Takenaka, M. Takata and K. Shinozaki
T. Futakuchi et al., "Preparation of Bi4Ti3O12 Based Thick Films by Screen Printing", Key Engineering Materials, Vol. 350, pp. 115-118, 2007