SrCO<sub>3</sub>掺杂对PMN-PMnN-PZT-Ce压电陶瓷储能及介电弛豫性能的影响

doi:10.11896/j.issn.1005-023X.2017.06.003

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Abstract A series of Pb(Mg_1/3Nb_2/3)O₃-Pb(Mn_1/3Nb_2/3)O₃-PbZrO₃-PbTiO₃+0.3%CeO₂ (in mass fraction)+xSr (PMN-PMnN-PZT-Ce-xSr, x=0.00,0.03,0.05,0.07) ceramics were prepared by a columbite precursor method, and phase structures, energy-storage properties and relaxation behaviors of the as-prepared PMN-PMnN-PZT ceramics varied in SrCO₃ contents were stu-died. According to the results by X-ray diffraction, all samples are a single perovskite phase and possess a morphotropic phase boundary (MPB). The sample with x=0.07 obtained satisfactory energy storage performance, as its energy storage density and energy storage efficiency were 0.31 J/cm³ and 0.47, respectively under 60 kV/cm electric field. A modified Curie-Weiss law can describe the diffuse phase transition properly, and when Sr addition increases the dispersion coefficient of phase transformation γ increases. The sample with x=0.07, γ reaches a maximum value of 1.972 8, indicating that the dielectric relaxation behavior of ceramic is more evident.

Key words： piezoelectric ceramic phase structure energy-storage property dielectric relaxation diffuse phase transition

Published: 02 May 2018

CLC number:

TB321

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	Articles by authors
	ZHANG Hao
	ZHENG Deyi
	HU Shunmin
	PENG Guigui
	CHENG Cheng
	ZHANG Jing

Cite this article:

ZHANG Hao,ZHENG Deyi,HU Shunmin, et al. Effect of SrCO₃ Dopant on Energy Storage and Dielectric Relaxation
Properties of PMN-PMnN-PZT-Ce Piezoelectric Ceramics[J]. Materials Reports, 2017, 31(6): 11-15.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.06.003 OR http://www.mater-rep.com/EN/Y2017/V31/I6/11

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