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Magnetic Behavior of Multicomponent Bismuth Niobates and Bismuth Titanates, with Pyrochlore and Layered Perovskite-Type Structures
Published in Natalia V. Chezhina, Dmitry A. Korolev, Electronic Structure of Materials, 2019
Irina V. Piir, Mariya S. Koroleva, Dmitry A. Korolev, Natalia V. Chezhina
Structural disordering of Bi2Ti2O7, along with dimensional (geometric) factor (rA/rB = 1.93—falls out of the structure stability region) results in the thermal instability of the bismuth titanate. The unstable phase of the Bi2Ti2O7 pyrochlore, which is decomposed at temperatures above 670°C to give Bi2Ti4O11 and Bi4Ti3O12 is shown in the phase diagram of the Bi2O3-TiO2 system (Fig. 5.18).73 Doping bismuth titanate with 3d- and rare earth metals increases their thermal (thermodynamic) stability.
Dielectric relaxation of Bi4Ti3O12 ceramics prepared by the low-temperature combustion synthesis
Published in Phase Transitions, 2018
L. Kozielski, M. Płońska, T. Sebastian, F. Clemens
Bismuth layered structure ferroelectric (BLSF) are recently taken into consideration as a potential candidate for high-temperature piezoelectric applications (>300°C). Ferroelectric phase in bismuth titanate Bi4Ti3O12 (BIT) is present up to 690°C (Curie temperature-Tc), much higher than that of most studied piezoelectric materials such as lead zirconium titanate, PZT (Tc = 370°C), or barium titanate, BT (Tc = 130°C) [1,2].
Effect of Nb-doping and E-poling on dielectric and electric properties of NBT ceramics
Published in Phase Transitions, 2021
J. Suchanicz, M. Wąs, M. Nowakowska-Malczyk, K. Konieczny, P. Czaja, K. Kluczewska-Chmielarz, J. Marchewka, D. Wcisło, R. Wolański, K. Stanuch, M. P. Trubitsyn, M. Sokolowski
Sodium bismuth titanate (Na0.5Bi0.5TiO3) (NBT) is the most promising candidate to replace Pb-based systems. However, relatively high electric conductivity and coercive field of NBT lead to problems with their E-poling for piezoelectric, ferroelectric and energy storage application [1]. Doping of NBT by different ions can lead to improve their electric field poling conditions.