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The enhanced piezoelectric property of (Li,K,Na)(Nb,Ta)O-3 lead-free ceramics induced by rare earth oxide doping

文献类型： 外文期刊

作者： Huang, Rongxia 1 ; Zhao, Yongjie 2 ; Yan, Dong 3 ;

作者机构： 1.Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Guangdong, Peoples R China

2.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Construct Tailorable Adv Funct Ma, Beijing 100081, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词： Ferroelectric property; Piezoelectric property; Strain property

期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS （ 影响因子：5.316； 五年影响因子：4.631 ）

ISSN： 0925-8388

年卷期： 2018 年 750 卷

页码：

收录情况： SCI

摘要： The ions doping engineering has already been proved to be an effective approach of adjusting the intrinsic properties of perovskite structured materials and even realizing some new functionality. The polymorphic phase transition effect was put forward to elucidate the enhanced ferroelectric and piezoelectric properties in (K,Na)NbO3-based materials. In current research, Li-Ta modified (K,Na)NbO3 lying in composition region of the coexistence structure was selected as target materials, and Ce2O3 was chose as dopant in order to reveal the effect of ion doping on the target materials. Owing to the sensitive energy state in the coexistence phase structure, an obvious phase evolution from orthorhombic to tetragonal would be brought about by the doping of Ce2O3. When the doping amount was 0.5% mol, the enhanced ferroelectric property (the remnant polarization of P-r = 21.8 mu C/cm(2)), piezoelectric property (the piezoelectric coefficient of d(33) = 272 pC/N) and field-induced property (0.13@4 kV/mm) could be achieved. (C) 2018 Elsevier B.V. All rights reserved.

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