Journal Article10.1016/J.JEURCERAMSOC.2013.06.029
Microstructure, ferroelectric and piezoelectric properties of Bi0.5K0.5TiO3-modified BiFeO3–BaTiO3 lead-free ceramics with high Curie temperature
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TL;DR: In this article, the effects of composition, sintering temperature and dwell time on the microstructure and electrical properties of (0.75−−x)BiFeO3−0.25BaTiO3-xBi0.5K0.025 ceramics were studied.
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Abstract: The effects of composition, sintering temperature and dwell time on the microstructure and electrical properties of (0.75 − x)BiFeO3–0.25BaTiO3–xBi0.5K0.5TiO3 + 1 mol% MnO2 ceramics were studied. The ceramics sintered at 1000 °C for 2 h possess a pure perovskite structure and a morphotropic phase boundary of rhombohedral and pseudocubic phases is formed at x = 0.025. The addition of Bi0.5K0.5TiO3 retards the grain growth and induces two dielectric anomalies at high temperatures (T1 ∼ 450–550 °C and T2 ∼ 700 °C, respectively). After the addition of 2.5 mol% Bi0.5K0.5TiO3, the ferroelectric and piezoelectric properties of the ceramics are improved and very high Curie temperature of 708 °C is obtained. Sintering temperature has an important influence on the microstructure and electrical properties of the ceramics. Critical sintering temperature is 970 °C. For the ceramic with x = 0.025 sintered at/above 970 °C, large grains, good densification, high resistivity and enhanced electrical properties are obtained. The weak dependences of microstructure and electrical properties on dwell time are observed for the ceramic with x = 0.025.
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BiFeO3-BaTiO3: A new generation of lead-free electroceramics
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References
Structural, magnetic and dielectric properties of Sc modified (1 − y)BiFeO3–yBaTiO3 ceramics
TL;DR: In this article, the bulk ceramics with general formula (1−−y)BiFe1−xScxO3-yBaTiO3 (x = 0.1−0.3, y = ǫ 0.3) were prepared by the traditional solid-state method.
15
Dielectric and piezoelectric properties of BiMnO3 doped 0.95Na0.5K0.5NbO3–0.05LiSbO3 ceramics
TL;DR: In this paper, lead-free piezoelectric ceramics were investigated as a function of x, and they were found to increase the Curie temperature from 370°C at x = 0.004 to 0.002.
15
Local Structure of Magnetoelectric BiFeO3–BaTiO3 Ceramics Probed by Synchrotron X-Ray Absorption Spectroscopy
S. Chandarak,Jaru Jutimoosik,Athipong Bootchanont,Muangjai Unruan,Pongsakorn Jantaratana,Shashank Priya,Sutham Srilomsak,Saroj Rujirawat,Saroj Rujirawat,Rattikorn Yimnirun +9 more
TL;DR: In this paper, the dielectric, ferroelectric, ferromagnetic, and magnetoelectric properties were determined and all the results suggested that Cu and Mn dopants occupied different B-site lattices in the 075BiFeO3-025BaTiO3 structure.
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Morphotropic phase boundary and piezoelectric properties of (Bi1∕2Na1∕2)TiO3–(Bi1∕2K1∕2)TiO3–KNbO3 lead-free piezoelectric ceramics
TL;DR: In this article, the crystal structure and piezoelectric properties of ternary ceramics x(Bi1∕2Na1 ∕2)TiO3-y(Bi 1∕ 2K1√2) TiO3 -nknbO3 (abbreviated as BNT-BKT-KN100x∕100y ∕100z) system have been investigated.
Effect of La3+ substitution on the phase transitions, microstructure and electrical properties of Bi1−xLaxFeO3 ceramics
Qiang Zhang,Xiaohong Zhu,Yunhui Xu,Haobin Gao,Yunjun Xiao,Dayun Liang,Jiliang Zhu,Jianguo Zhu,Dingquan Xiao +8 more
TL;DR: In this paper, the effects of La3+ doping on the density, phase structure, morphology, dielectric and ferroelectric properties of multiferroic Bi1−xLaxFeO3 ceramics were investigated.