Microstructure and dielectric properties of perovskite-structured high-entropy ceramics of Pb(Zr0.25Ti0.25Sn0.25Hf0.25)O3 |
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| Affiliation: | 1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650093, PR China;2. Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, Yunnan Province, 650093, PR China;3. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan Province, 650000, PR China;1. Spectroscopy Department, Physics Research Institute, National Research Center, 12311, 33 Elbehouth st., Dokki, Cairo, Egypt;2. Department of Physics, Faculty of Science, Mansura University, Mansoura, 35516, Egypt;1. School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, People''s Republic of China;2. College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, People''s Republic of China;3. The Key Lab of Industrial Textile Material and Manufacturing Technology, Zhejiang Province, Hangzhou, 310018, People''s Republic of China;4. Zhejiang Jinda New Materials Co., Ltd., Zhejiang Province, Haining, 314419, People''s Republic of China;1. Nanomaterials and Nanomagnetism Research Laboratory, Department of Physics, Sasi Institute of Technology & Engineering, Tadepalligudem, 534 101, India;2. Department of Physics, Sri Krishnadevaraya University, Aanthapur, 515 003, India;3. Department of Physics, KPR Institute of Engineering and Technology, Coimbatore, 641 407, India;4. Department of Physics, Centurion University of Technology and Management, Vizianagaram, 535003, India;5. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;6. Homi Bhabha National Institute, Anushkatinagar, Mumbai, 400 094, India;7. Department of Physics, Andhra University, Visakhapatnam, 530 003, India;1. State Key Laboratory of Transient Optics and Photonics, Xi''an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences (CAS), Xi''an, Shaanxi, 710119, China;2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China;3. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China;1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, PR China;2. Laboratory for High Performance Transparent Protective Materials of Jiangsu Province, Jiangsu Tiemao Glass Co., Ltd., Nantong, 226600, PR China;1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China;2. Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China;3. Nanjing Haoqi Advanced Materials Co., Ltd., Nanjing, 211300, China |
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| Abstract: | A dielectric high-entropy ceramic with a composition of Pb(Zr0.25Ti0.25Sn0.25Hf0.25)O3 was designed through B-site doping, and then prepared by solid phase reaction method combined with conventional sintering in air for 3 h at 1200 °C, 1250 °C and 1300 °C, respectively. All the high-entropy ceramics of Pb(Zr0.25Ti0.25Sn0.25Hf0.25)O3 possess a perovskite structure with uniform elemental distribution and their average grain size falls within the range of 3.19–5.5 μm. For the sample sintered at 1250 °C, the dielectric loss is less than 0.07 in the testing frequency of 1 kHz∼1 MHz in 30–350 °C, and the dielectric constant reaches a peak of 14356 at about 270 °C at 1 kHz. At room temperature, the remnant polarization Pr reaches 28.8 μC/cm2. The results demonstrate that the high-entropy ceramic of Pb(Zr0.25Ti0.25Sn0.25Hf0.25)O3 has great potentials in the dielectric and ferroelectric field. |
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| Keywords: | High-entropy ceramics Dielectric and ferroelectric properties |
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