Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8147549 | Current Applied Physics | 2018 | 30 Pages |
Abstract
Different type doped CaBi2Nb2O9 (CBN) ceramics were prepared by a conventional solid state sintering method. The number of oxygen vacancies were decreased or increased by the introduction of W6+ and Ti4+ doping in CBN ceramics. The influence of W6+, Ti4+ and W6+/Ti4+ dopants on the microstructures and electrical properties of CBN-based ceramics was investigated. The voids and spherical morphology in the SEM image of W, Ti co-doped ceramics indicate that W, Ti co-doping could change the microstructure of CBN-based ceramics. Impedance analysis results show that the electrical properties of CBN-based ceramics have a close relationship with the number of oxygen vacancies. W doping and W, Ti co-doping decrease the oxygen vacancies, as a result, the resistance and piezoelectric properties were increased and the frequency dispersion of dielectric properties were restrained.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Xinghe Xing, Feng Cao, Zhihang Peng, Yang Xiang,