期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 39, 期 6, 页码 2050-2057出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2019.01.042
关键词
Bi4Ti3O12; Aurivillius; Piezoelectricity; Resistivity; Thermal stability
资金
- National Natural Science Foundation of China [51502067]
- Key research and development projects of Zhejiang Province [2017C01056]
Cu/Nb co-doped Aurivillius type Bi4Ti3-x(Cu1/3Nb2/3)(x)O-12 (BTCN) ceramics were investigated as a potential candidate for high temperature piezoelectric application. The microstructure, phase structure and resulting piezoelectric properties and conduction behaviors were systematically investigated. A remarkable d(33) of 38 pC/N was achieved in the ceramic with a composition of x = 0.015, which may be ascribed to the enhancement of remanent polarization and decrease of coercive field. Moreover, a high DC resistivity of 8.39 x 10(6) Omega.cm at 500 degrees C was also obtained in the composition, due to the decrease of the oxygen vacancy concentration induced by the doped Cu/Nb. Furthermore, the ceramic also exhibited stable thermal annealing behaviors and excellent fatigue resistance. All the results demonstrated the great potential of the Cu/Nb co-doped Bi4Ti3O12 ceramics for high temperature piezoelectric applications.
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