Dielectric and Piezoelectric Properties of NaNbO3–LiNbO3–SrTiO3 Ceramics

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概要

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• To develop Pb-free piezoelectric ceramics, the dielectric and piezoelectric properties of NaNbO3–LiNbO3–SrTiO3 perovskite ceramics were investigated as functions of composition. As for ceramics prepared in this study, the orthorhombic perovskite phase was formed at lower temperatures and was transformed to a tetragonal form and then to a cubic form with an increase in temperature. The tetragonal-cubic transition temperature (Curie temperature, $T_{\text{c}}$) gradually shifted toward lower temperatures with an increase in SrTiO3 content. Among the ceramics obtained, the 0.86NaNbO3–0.09LiNbO3–0.05SrTiO3 composition showed relatively good piezoelectric properties, namely, $k_{\text{p}} = 0.20$, $d_{33} = 53$ pC/N, and $Q_{\text{m}} = 500$, for high-frequency applications for the Pb-free piezoelectric ceramics reproted.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-10-30

著者

• Kusumoto Keiji

  Sustainable Material Research Institute, National Institute of Advanced Industrial Science and Technology, Nagoya 463-8560, Japan

関連論文

• Dielectric and Piezoelectric Properties of NaNbO3–LiNbO3–SrTiO3 Ceramics
• Dielectric and Piezoelectric Properties of KNbO3–NaNbO3–LiNbO3–SrTiO3 Ceramics

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