Study of Lead Magnesium Niobate–Lead Titanate Ceramics for Piezo-Actuator Applications

概要

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Structural, dielectric, ferroelectric and piezoelectric properties of lead magnesium niobate–lead titanate, PMN–PT ($66:34$), prepared at different sintering temperatures (1150–1250°C) are discussed for actuator applications. System sintered at 1200 and 1250°C showed better perovskite phase stabilization and higher values of dielectric constant ($\varepsilon_{\text{r}}$). Remnant polarization ($P_{\text{r}}$) was found to be higher (45 μC/cm2) for the system sintered at 1250°C. The piezoelectric coefficients, $d_{33}$, $d_{31}$, $d_{\text{h}}$ and strain induced in the system by a large electric field were found to be sintering temperature dependent. Hysteresis free strain behavior of the system sintered at 1200°C showed the suitability of this material for actuator applications.
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
2004-04-15