Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO3-SrZrO3 lead-free ceramics

doi:10.1016/j.jallcom.2015.09.055

	Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO3-SrZrO3 lead-free ceramics
	Yan, Xiaobin 1; Peng, Biaolin 2; Lu, Xuefeng 1; Dong, Qizheng 1; Li, Wensheng 1
刊名	Journal of Alloys and Compounds
	2015-12-25
卷号	653 页码:523-527
关键词	Crystallography Phase boundaries Phase transitions Piezoelectric ceramics Piezoelectricity Solid state reactions Strontium compounds Technetium Zirconium compounds Compositional dependence Comprehensive performance Lead free ceramics Lead-free piezoelectric ceramic Lead-free piezoelectric materials Piezoelectric property Solid state reaction method Tetragonal phase
ISSN号	09258388
DOI	10.1016/j.jallcom.2015.09.055
英文摘要	(K0.5Na0.5)NbO3-0.06LiTaO3-xSrZrO3 (KNN-LT-xST) lead-free piezoelectric ceramics with rhombohedral-tetragonal (R-T) phase boundary have been designed and prepared by the conventional solid-state reaction method, the phase transitional behavior and composition-dependent piezoelectric properties of KNN-LT-xST lead-free system were investigated. The R-T phase boundary is identified in the KNN-LT-xST ceramics with a composition of 0.04 ≤ x ≤ 0.06. The ceramics in the vicinity of the R-T phase coexistence zone exhibit a strong compositional dependence and significantly enhanced piezoelectric properties. A comprehensive performance of d33 (222-254 pC/N) and Tc (282-312 °C) could be obtained in the KNN-LT-xSZ ceramics with 0.04 ≤ x ≤ 0.06 by tailoring the SrZrO3 content. The ceramic with x = 0.045 shows the optimum electrical properties: d33 = 254 pC/N, kp = 28%, Εr = 758, tanδ = 1.7%, Pr = 8.98 μC/cm2 and Tc = 300 °C. The existence of an R-T phase boundary and therefore the involvement of the more polarization states should be responsible for the enhanced piezoelectric properties of the KNN-LT-xSZ ceramics. The good piezoelectric properties together with a high cubic-tetragonal phase transition temperatures (Tc) make the KNN-LT-xSZ ceramics showing the promising lead-free piezoelectric material system for the practical applications. © 2015 Elsevier B.V.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000363270000070
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113383]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Department of Applied Physics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
推荐引用方式 GB/T 7714	Yan, Xiaobin,Peng, Biaolin,Lu, Xuefeng,et al. Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO3-SrZrO3 lead-free ceramics[J]. Journal of Alloys and Compounds,2015,653:523-527.
APA	Yan, Xiaobin,Peng, Biaolin,Lu, Xuefeng,Dong, Qizheng,&Li, Wensheng.(2015).Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO3-SrZrO3 lead-free ceramics.Journal of Alloys and Compounds,653,523-527.
MLA	Yan, Xiaobin,et al."Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO3-SrZrO3 lead-free ceramics".Journal of Alloys and Compounds 653(2015):523-527.