Abstract
High temperature ferroelectric ceramics CaBi2Nb2O9 + x wt% MnCO3 (CBNO-x) are prepared by conventional sintering method. The microstructures and ferroelectric properties are studied. The Mn-added CBNO-based ceramics have a single Aurivillius phase structure. Nearly isotropic grains are obtained and the grains become larger with the increase of MnCO3 addition. The Curie temperature T c decreases slightly with the increase of MnCO3 addition. The relative dielectric constant, dielectric loss, and the P–E hysteresis loop measurements indicate that Mn ions creates “soft” and “hard” doping effects simultaneously. Superior polarization performance (2P r of 3.0 μC/cm2 and 2E c of 40.2 kV/cm) is obtained for the CaBi2Nb2O9-0.375 wt% MnCO3 ceramics.
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Acknowledgments
This research is supported by the National Natural Science Foundation of China (Grant Nos. 11274389 and 11204378), and the Shaanxi Provincial Natural Science Foundation of China (Grant Nos. 2011JM6012 and 2011JQ8031).
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Tian, X., Qu, S., Zhou, Y. et al. Effects of Mn-Addition on the Microstructure and Ferroelectric Properties of High-Temperature CaBi2Nb2O9 Ceramics. J Inorg Organomet Polym 23, 877–880 (2013). https://doi.org/10.1007/s10904-013-9860-7
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DOI: https://doi.org/10.1007/s10904-013-9860-7