首页|Crystal growth and electrical properties of Na_(0.5)Bi_(0.5)TiO_3-BaTiO_3 lead-free ferroelectric piezocrystals

Crystal growth and electrical properties of Na_(0.5)Bi_(0.5)TiO_3-BaTiO_3 lead-free ferroelectric piezocrystals

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(1-x)(Na_(0.5)Bi_(0.5))TiO_(3-x)BaTiO_3 (abbreviated as NBBT100(1-x)/100x or NBBT100x) solid solution single crystals with x=0, 0.06, 0.08, 0.10, 0.20, 1.0 were grown using top-seeded solution growth (TSSG) method. Dielectric, piezoelectric and ferroelectric properties of NBBT crystals were investigated as a function of temperature, frequency, composition and crystal orientation. The temperature (T_m) corresponding to dielectric maximum and the depolarization temperature (T_d) decrease with increasing x. The <001> oriented NBBT90/10 single crystal shows excellent piezoelectric performance with piezoelectric constant (d_(33)) value about 275pC/N and exhibits relatively smaller coercive field (E_e) of 2.49 kV/mm and dielectric loss tanδ of 2.9 %, indicating a more adaptive engineered domain structure.

NBBT single crystallead-freecrystal growthpiezoelectric properties

Chao Chen、Xiangyong Zhao、Hong Liu、Wenwei Ge、Haosu Luo、Xiangping Jiang

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The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China Department of Material Science and Engineering, Jingdezhen Ceramic Institute, China

The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China

Department of Material Science and Engineering, Jingdezhen Ceramic Institute, China

2010

10.4028/www.scientific.net/KEM.421-422.17

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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