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Erschienen in:
01.11.2015
Dielectric, ferroelectric and piezoelectric properties of Ca0.1Sr0.9Bi2Nb2O9 ceramic
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 11/2015
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Abstract
Ca
x
Sr1−x
Bi2Nb2O9, as one of Aurivillius ceramics, was prepared by a conventional solid-state reaction method. The X-ray diffraction study showed that the ceramic possess a pure structure and no secondary phase can be detected. The scanning electron microscopy indicates that the grains of all the samples are all well-defined, but no obvious impact on the size of the ceramics. The dielectric, ferroelectric and piezoelectric properties of the Ca0.1Sr0.9Bi2Nb2O9 were investigated and found that the Curie temperature (T
c
), piezoelectric constant (d
33), remnant polarization (2P
r
) and coercive field (E
c
) were about 552 °C, 18 pC/N, 15.34 μC/cm2 and 47.75 kV/cm, respectively. Meanwhile, the impedance and dielectric properties of this piezoceramic for practical applications have also been discussed.