New Bi(Mg0.75W0.25)O3–PbTiO3 ferroelectric ceramics |
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| Affiliation: | 1. Research and Development Department, Morgan Electro Ceramics Netherlands, Zwaanstraat 2a, Building RK1, 5651 CA Eindhoven, The Netherlands;2. Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China;2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China;3. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China;1. Department of Basic Science, Faculty of Engineering Science, Sinai University, Al-Arish, Egypt;2. Department of Physics, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt;3. Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884, Cairo, Egypt |
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| Abstract: | An investigation was made into the Bi(Mg0.75W0.25)O3–PbTiO3 (BMW-PT) system. The aim was to find the optimum composition with respect to piezoelectric and dielectric properties and link this to the presence of a morphotropic phase boundary (MPB). The optimum composition was found to be 62 mol% PT. The maximum values of the piezoelectric constant d33 = 150 pm/V and the maximum relative dielectric constant ɛ33/ɛ0 = 1400. The dielectric loss is high with tan δ typically ∼5%. Results from capacity versus the temperature measurements indicate a Curie temperature of 220 °C, which is significantly lower than the predicted value. |
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