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- W1671252030 abstract "High-power piezoelectric materials are presently being extensively developed for applications such as ultrasonic motors and piezoelectric transformers. In this study, the piezoelectric and dielectric properties of Fe 2 O 3 -doped 0.57Pb(Sc 1/2 Nb 1/2 )O 3 –0.43PbTiO 3 (hereafter 0.57PSN–0.43PT), which is the morphotropic phase boundary composition of the PSN–PT system, were investigated. The maximum dielectric constant ( ε 33 / ε 0 =2551) and the minimum dielectric loss (tan δ=0.51%) at room temperature were obtained at Fe 2 O 3 additions of 0.1 wt% and 0.3 wt%, respectively. The temperature dependence of the dielectric constant and the dielectric loss was measured between room temperature and 350°C. With the addition of Fe 2 O 3 , the piezoelectric constant d 33 and electromechanical coupling factor k p were slightly decreased, but the mechanical quality factor Q m was significantly increased. The highest mechanical quality factor ( Q m =297) was obtained at 0.3 wt% Fe 2 O 3 , which is 4.4 times higher than that of nondoped 0.57PSN–0.43PT ceramics. The P – E and S – E loops of the samples at room temperature and at 1.0 Hz were measured at the same time using an automated polarization measuring system." @default.
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- W1671252030 title "Piezoelectric and Dielectric Properties of Fe<sub>2</sub>O<sub>3</sub>-Doped 0.57Pb(Sc<sub>1/2</sub>Nb<sub>1/2</sub>)O<sub>3</sub>–0.43PbTiO<sub>3</sub> Ceramic Materials" @default.
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- W1671252030 doi "https://doi.org/10.1143/jjap.38.1433" @default.
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