Effect of doping Gd2O3 on dielectric and piezoelectric properties of BaZr0.1Ti0.9O3 ceramics by sol–gel method
- 130 Downloads
The effects of sintering temperature and doping amount of gadolinium ions on the microstructures and electrical properties of sol gel derived Ba (Zr0.1Ti0.9) O3 + xGd ceramics were investigated in this manuscript. XRD analysis showed that the main crystalline phase of BZT-xGd ceramic samples exhibit a perovskite structure without significantly change. The sample sintered at 1350 °C and doped with gadolinium ions of 0.5 mol% has uniform grain size and compact morphology. And the sample(1350 °C—0.5 mol%) also has a high piezoelectric charge coefficient of 131.33 pC/N, large plane electromechanical coupling coefficient of 0.22, high dielectric constant of 10504, and small dielectric loss of 0.01. The correlation of dielectric and piezoelectric properties of BZT-xGd ceramics with doping amount of Gd3+ ion has been explained by the lattice theory.
This work was supported by Science and Technology Support Project of Hebei Province, China (Grant No. 15211111), and the National Natural Science Foundation of China (Grant No. 51502075).
- 3.W.X. Dun, Y.L. Li, Z.S. Zheng et al., Influence of doping Yb2O3 on dielectric properties of BaTi0.95Sn0.05O3 ceramics. Dig. J. Nanomater. Biostruct. 12(4), 1081–1087 (2017)Google Scholar
- 6.G. Wu, J. Li, K. Wang et al., In situ synthesis and preparation of TiO2/polyimide composite containing phenolphthalein functional group. J. Mater. Sci. 28(9), 6544–6551 (2017)Google Scholar
- 23.Y. Tian, L. Wei, X. Chao et al., Phase transition behavior and large piezoelectricity near the morphotropic phase boundary of lead-free (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3. Ceram. J. Am. Ceram. Soc. 96(2), 496–502 (2012)Google Scholar
- 25.Y.F. Wang, Z.S. Zheng, Y.L. Li et al., Effect of Nb2O5 doping on dielectric properties of BaTi0.9Sn0.1O3 ceramics. Dig. J. Nanomater. Biostruct. 1(1), 193–199 (2018)Google Scholar