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Fatigue and Ferroelectric Properties of Bi3.25Gd0.75Ti2.97V0.03O12
Abstract:
Bi3.25Gd0.75Ti2.97V0.03O12 (BGTV) ceramics were prepared by solid state reaction. These samples had polycrystalline Bi-layered perovskite structure without preferred orientation, and consisted of well developed plate-like grains with random orientation. The remanent polarization and the coercive field of the BGTV were 24μC/cm2 and 65kV/cm at an electric field of 100kV/cm, respectively. These ferroelectric properties of BGTV are superior to V-doped Bi4Ti3O12 (~20μC/cm2 and 80kV/cm) and (Sr, Ta)-doped Bi4Ti3O12 (~12μC/cm2 and 71kV/cm) ceramics. In addition, the dense ceramics of BGTV could be obtained by sintering at temperatures 100─200°C lower than those of the SrBi2Ta2O9 system.
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170-173
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December 2012
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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