首页|Dielectric and Piezoelectric Properties of (Na,Ba)(Nb,Ti)O_3 Lead-Free Piezoelectric Ceramics

Dielectric and Piezoelectric Properties of (Na,Ba)(Nb,Ti)O_3 Lead-Free Piezoelectric Ceramics

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  • Trans Tech Publications Ltd
(Na_(1-x)Ba_x)(Nb_(1-x)Ti_x)O_3 (NNBTx; x=0.0-0.21) solid-solution ceramics were synthesized and their crystal structure, dielectric properties and piezoelectric properties were investigated. The crystal structure at room temperature of NNBTx varied from orthorhombic to tetragonal with increasing BaTiO_3 content x. The phase boundary between orthorhombic and tetragonal at room temperature was confirmed BT content between x=0.08 and 0.09. For x>0.05, it was found that the Curie temperature was decreased with increasing x. The highest electromechanical coupling factor, k_p, and the largest piezoelectric constant, d_(33), were obtained at x=0.09-0.10.

NaNbO_3lead-free piezoelectric ceramicspiezoelectric propertiesdielectric propertiesphase transition

Rintaro Aoyagi、Makoto Iwata、Masaki Maeda

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Department of Engineering Physics, Electronics and Mechanics, Graduate School of Engineering, Nagoya Institute of Technology Gokisocho, Showa-ku, Nagoya 466-8555 Japan

2010

10.4028/www.scientific.net/KEM.445.55

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.445
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