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Title: Dielectric behavior and microstructure of (Bi[sub ½]Na[sub ½])TiO₃-(Bi[sub ½]K[sub ½])TiO₃-BaTiO₃ lead-free piezoelectric ceramics
Authors: Wang, X. X.
Choy, Siu-hong
Tang, Xingui
Chan, Helen L. W.
Subjects: Bismuth compounds
Sodium compounds
Potassium compounds
Barium compounds
Crystal microstructure
Dielectric losses
X-ray diffraction
Scanning electron microscopy
Issue Date: 28-Apr-2005
Publisher: American Institute of Physics
Source: Journal of applied physics, 28 Apr. 2005, v. 97, 104101, p. 1-4
Abstract: (0.95−x)(Bi[sub ½]Na[sub ½])TiO₃-x(Bi[sub ½]K[sub ½])TiO₃-0.05BaTiO₃ lead-free piezoelectric ceramics (abbreviated as BNT-BKT-BT100x with x varying from 0 to 20 mol %) are prepared by a solid-state reaction process. Variation of the dielectric properties and microstructure of BNT-BKT-BT100x ceramics with BKT content is studied. The results indicate that the relative permittivity ε[sub r] and loss tangent tan δ vary with the BKT amount. Scanning electron microscope observation also indicates that BKT in high amount affects the microstructure. X-ray diffraction analysis shows that the incorporated BKT diffuses into the BNT-BT lattice to form a solid solution during sintering.
Rights: © 2005 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in X.X. Wang et al. J. Appl. Phys. 97, 104101 (2005) and may be found at
Type: Journal/Magazine Article
ISSN: 0021-8979
Appears in Collections:MRC Journal/Magazine Articles
AP Journal/Magazine Articles

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