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- W1577309075 abstract "The dielectric, ferroelectric and piezoelectric properties of bismuth potassium titanate, (Bi 1/2 K 1/2 )TiO 3 (BKT), ceramics were studied. Single-phase BKT ceramics with a high relative density of 97% were obtained by the hot pressing (HP) method. The resistivities of BKT ceramics hot-pressed at 1060 and 1080°C (hereafter abbreviated as BKT-HP1060°C and BKT-HP1080°C) were fairly high being of the order of 10 13 Ω·cm at room temperature (RT). The Curie temperature T c of BKT-HP1060°C was 437°C, which is relatively higher than those of other lead-free piezoelectric materials. In this study, the ferroelectric properties of BKT ceramics were successfully obtained with fully saturated hysteresis loops. The remanent polarization P r and coercive field E c of BKT-HP1080°C were 22.2 µC/cm 2 and 52.5 kV/cm, respectively. D – E hysteresis loops for these ceramics were observed even at 260°C. The electromechanical coupling factor k 33 and piezoelectric constant d 33 of BKT-HP1080°C were 0.28 and 69.8 pC/N, respectively. The second-phase transition temperature T 2 of 340°C was determined from the temperature dependence of piezoelectric and dielectric measurements." @default.
- W1577309075 created "2016-06-24" @default.
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- W1577309075 date "2005-07-01" @default.
- W1577309075 modified "2023-10-02" @default.
- W1577309075 title "Ferroelectric and Piezoelectric Properties of (Bi<sub>1/2</sub>K<sub>1/2</sub>)TiO<sub>3</sub> Ceramics" @default.
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- W1577309075 doi "https://doi.org/10.1143/jjap.44.5040" @default.
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