Depolarization temperature and piezoelectric properties of Na1/2Bi1/2TiO3-Na1/2Bi1/2(Zn1/3Nb2/3)O3 ceramics by two-stage calcination method |
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| Authors: | Xin-Yu Liu Chang-Rong Zhou and Zhao-Hui Shan |
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| Affiliation: | (1) School of Material Science and Engineering, Central South University, Changsha, Hunan, 410083, China;(2) Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China |
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| Abstract: | A new group of NBT-based lead-free piezoelectric ceramics, Na1/2Bi1/2TiO3-Na1/2Bi1/2(Zn1/3Nb2/3)O3, was synthesized using the two-stage calcination method and depolarization temperatures and piezoelectric properties were
also investigated. The XRD analysis showed that the ceramics system had a morphotropic phase boundary (MPB) between the rhombohedral
and the tetragonal structure. The highest piezoelectric properties of d
33 = 97 pC/N and k
t = 0·46 were obtained near MPB compositions. Furthermore, the depolarization temperatures near MPB compositions were slightly
decreased and the lowest T
d was maintained at 210°C. |
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| Keywords: | Lead-free piezoelectric ceramics depolarization temperature perovskite structure piezoelectric properties |
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