Processing and Electrical Properties in Lead-Based (Pb(Mg1/3Nb2/3)O3, Pb(Yb1/2Nb1/2)O3, PbTiO3) Systems |
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Authors: | Erdem Akça Hüseyin Yilmaz Cihangir Duran |
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Affiliation: | Department of Materials Science and Engineering, Gebze Institute of Technology, 41400 Gebze, Kocaeli, Turkey |
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Abstract: | Lead-based ferroelectric (FE) ceramics exhibit superior electromechanical properties; therefore, there has been an increased focus on developing new lead-based FE materials with high Curie temperature ( T c) and enhanced properties. The aim of this study was to investigate new compositions in the Pb(Mg1/3Nb2/3)O3–Pb(Yb1/2Nb1/2)O3–PbTiO3 ( PMN–PYbN–PT) system to enhance the electromechanical properties while increasing the T c and lowering the sintering temperature. The 0.5750.5PMN–0.5PYbN]–0.425PT composition at PMN/PYbN (50/50) mole ratio were prepared by reactive sintering PMNT and PYbNT powder mixtures at 950°–1200°C for 4 h. PMNT and PYbNT powders were calcined via the columbite method. Samples were prepared by cold isostatic pressing at 80 MPa. Dense and fully perovskite 0.5750.5PMN–0.5PYbN]–0.425PT ceramics were fabricated at 975°C for 4 h, and these samples displayed a remnant polarization ( P r) of 32 μ C/cm2, coercive field ( E c) of 17 kV/cm, and a piezoelectric charge coefficient ( d 33) of 475 pC/N. It is proposed that this ternary system can be tailored for various applications. |
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