Piezoelectric shear-mode properties of Pb(Yb1/2Nb1/2)O3-PbTiO3 ceramics |
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Authors: | Jong Bong Lim Shujun Zhang |
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Affiliation: | a Nano Functional Materials Group, Korea Institute of Materials Science, Changwon, Gyeongnam 641-831 Republic of Korea b Material Research Institute, Pennsylvania State University, University Park, PA 16802, USA |
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Abstract: | A Pb(Yb1/2Nb1/2)O3-PbTiO3 [PYNT] solid solution was synthesized and characterized for its potential use. The shear-mode dielectric and piezoelectric behaviors of PYNT with a morphotropic phase boundary (MPB) composition were studied as a function of temperature. Dielectric permittivity K11T and loss were found to be 2310 and 2.5%, respectively, at room temperature. Piezoelectric coefficient d15 and electromechanical coupling factor k15 were calculated to be 710 pC/N and 0.70, respectively, maintaining nearly constant up to 300 °C, resistivity and RC time constant were observed to be 2.4 × 109 Ω cm and 1.07 s, respectively, at 350 °C. These good piezoelectric properties, together with the high Curie temperature (Tc ∼ 370 °C), indicate that PYNT is a promising candidate for high temperature-shear sensor and inkjet actuator applications. |
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Keywords: | Ferroelectrics Perovskites Piezoelectric materials |
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