Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO(3)-SrZrO3 lead-free ceramics

doi:10.1016/j.jallcom.2015.09.055

	Structure evolution and enhanced piezoelectric properties of (K0.5Na0.5)NbO3-0.06LiTaO(3)-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	Lead-free ceramics Phase transitions Piezoelectricity Rhombohedral-tetragonal phase boundary
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2015.09.055
英文摘要	(K0.5Na0.5)NbO3-0.06LiTaO(3)-xSrZrO(3) (KNN-LT-xST) lead-free piezoelectric ceramics with rhombohedraletetragonal (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 d(33) (222-254 pC/N) and T-c (282-312 degrees 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: d(33) = 254 pC/N, k(p) = 28%, epsilon(r) = 758, tan delta = 1.7%, P-r = 8.98 mu C/cm(2) and T-c = 300 degrees 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 (T-c) make the KNN-LT-xSZ ceramics showing the promising lead-free piezoelectric material system for the practical applications. (C) 2015 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51402196][51402142][21301084] ; China Postdoctoral Science Foundation[2014M552229][2015M572615] ; Gansu Provincial Youth Science and Technology Fund Projects[1310RJYA006] ; Program for Hongliu Young Teachers in Lanzhou University of Technology[Q201401]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000363270000070
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33897]
专题	材料科学与工程学院
通讯作者	Yan, Xiaobin
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
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)NbO3-0.06LiTaO(3)-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)NbO3-0.06LiTaO(3)-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)NbO3-0.06LiTaO(3)-SrZrO3 lead-free ceramics".JOURNAL OF ALLOYS AND COMPOUNDS 653(2015):523-527.