Abstract.
For the first time, the perovskite phase in 0.9Pb (Zr0.52Ti0.48)O3-0.1BaTiO3(0.9PZT-0.1BT) is triggered to form in an oxide matrix consisting of PbO, ZrO2, BaO, and TiO2. Unlike in the solid-state reaction activated by calcination at an intermediate temperature, intermediate phases, such as PbTiO3, were not observed with increasing degree of mechanical activation prior to the formation of perovskite 0.9Pb(Zr0.52Ti0.48)O3-0.1BaTiO3 phase. This suggests that the nucleation and subsequent growth of perovskite crystallites in the activated oxide composition are not a result of the interfacial reactions that normally occur in the temperature-driven solid-state reaction. The mechanical activation-derived powders can be sintered to a relative density of >97% theoretical at 1100 °C. Sintered 0.9Pb(Zr0.52Ti0.48)O3-0.1BaTiO3 derived from mechanical activation of constituent oxides exhibits a maximum dielectric constant of 775 and a minimum dielectric loss of <2% at room temperature when measured at 1.0 kHz.
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Received: 3 December 1998 / Accepted: 18 March 1999 / Published online: 24 June 1999
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Gan, B., Xue, J., Wan, D. et al. Lead zirconate titanate–barium titanate by mechanical activation of mixed oxides. Appl Phys A 69, 433–436 (1999). https://doi.org/10.1007/s003390051027
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DOI: https://doi.org/10.1007/s003390051027