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Piezoelectric and Ferroelectric Properties of Bismuth Tungstate Ceramics Fabricated by Spark Plasma Sintering

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Abstract:

Single-phase bismuth tungstate (Bi2WO6) ceramics with high relative density (>99%) were fabricated by spark plasma sintering. Ferroelectric, dielectric, and piezoelectric properties of Bi2WO6 ceramics were investigated. Almost saturated polarization–electric field (PE) hysteresis loops with a remanent polarization (Pr) of ∼16.1 C/cm2 and a coercive field (Ec) of ∼3.7 kV/mm were obtained. Curie point and second phase transition temperatures were observed at 937°±5° and 665°±5°C, respectively. The average piezoelectric constant (d33) of this high Curie point ceramic is 15±0.2 pCN−1.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2009.03344.x

Affiliations: 1: School of Engineering and Material Science, Queen Mary University of London, Mile End Road, London, E1 4NS, UK 2: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Publication date: December 1, 2009

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