Large piezoelectric properties in KNN-based lead-free single crystals grown by a seed-free solid-state crystal growth method

被引：21
作者：
Yang, Jie [1 ,2 ]
Zhang, Faqiang [1 ]
Yang, Qunbao [1 ]
Liu, Zhifu [1 ]
Li, Yongxiang [1 ]
Liu, Yun [3 ]
Zhang, Qiming [4 ,5 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Australian Natl Univ, Res Sch Chem, Canberra, ACT 2601, Australia
[4] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
[5] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
来源：
APPLIED PHYSICS LETTERS | 2016年 / 108卷 / 18期
基金：
中国国家自然科学基金; 澳大利亚研究理事会;
关键词：
TEMPLATED GRAIN-GROWTH; FREE CERAMICS; BEHAVIOR; PHASE; EVOLUTION; NA;
D O I：
10.1063/1.4948642
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report lead-free single crystals with a nominal formula of (K0.45Na0.55)(0.96)Li0.04NbO3 grown using a simple low-cost seed-free solid-state crystal growth method (SFSSCG). The crystals thus prepared can reach maximum dimensions of 6mm x 5mm x 2mm and exhibit a large piezoelectric coefficient d(33) of 689 pC/N. Moreover, the effective piezoelectric coefficient d(33)*, obtained under a unipolar electric field of 30 kV/ cm, can reach 967 pm/ V. The large piezoelectric response plus the high Curie temperature (T-C) of 432 degrees C indicate that SFSSCG is an effective approach to synthesize high-performance lead-free piezoelectric single crystals. Published by AIP Publishing.
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页数：4
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