Structural,dielectric and ferroelectric properties of lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics prepared by Plasma Activated Sintering |
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| Affiliation: | 1. Materials Science and Nanotechnology Programs, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;2. School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;3. Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineer, Khon Kaen University, Khon Kaen 40002, Thailand;1. King Abdullah Institute for Nanotechnology, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia;2. School of Physics and Materials Science, Shoolini University of Biotechnology & Management Sciences, Bajhol, Solan 173212, HP, India;3. Department of Physics and Astronomy, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia;4. Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, 50603 Kuala Lumpur, Malaysia;5. Department of Mechatronics Engineering, Faculty of 4Engineering and Natural Sciences, Bahcesehir University, 34349 Besiktas, Istanbul, Turkey;6. Physics Department, Faculty of Science, University of Sidi-Bel-Abbes, 22000 Sidi-Bel-Abbes, Algeria;1. School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China;2. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;3. Key Laboratory of Inorganic Function Material and Device, Chinese Academy of Sciences, Shanghai 201800, China;1. School of Material Science and Engineering, Harbin University of Science and Technology, Harbin 150080, People''s Republic of China;2. Key Laboratory of Engineering Dielectric and its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, People''s Republic of China;3. School of Applied Science, Harbin University of Science and Technology, Harbin 150080, People''s Republic of China |
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| Abstract: | Lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) ceramics were prepared by Plasma Activated Sintering (PAS). The influence of PAS sintering temperature on the crystalline phase, microstructure, and, dielectric and ferroelectric properties of BCZT ceramics were studied. The phase structure of BCZT ceramics first changed from rhombohedral phase to the coexistence of rhombohedral and tetragonal phases and then to tetragonal phase as the sintering temperature increased. Microstructural characterization of BCZT ceramics indicated that PAS can obtain a compact microstructure at lower temperatures of 1150–1300 °C compared with that from common pressureless sintering. The BCZT ceramics showed different degrees of diffuseness with increased temperature, and the diffuseness exponents C are all approximately on the order of 105 °C. The dielectric and ferroelectric properties of BCZT ceramics were enhanced with increased sintering temperature. BCZT ceramics sintered at 1250 °C exhibited optimum properties of room-temperature εr=2863, εm=6650, and 2Pr=25.24 μC/cm2, resulting from the relatively higher tetragonal phase content of the MPB between tetragonal and rhombohedral phases together with a compact microstructure. |
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| Keywords: | Lead-free BCZT ceramics Plasma Activated Sintering Structure Dielectric property and ferroelectric property |
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