Enhanced microwave absorption properties in BiFeO3 ceramics prepared by high-pressure synthesis |
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| Authors: | Fusheng Wen Nan Wang Fang Zhang |
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| Affiliation: | 1. Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India;2. Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata-700032, India;1. School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, China;2. Departmant of Physics, Osmania University, Hyderabad, 500 007, India;3. Department of Physics, National Institute of Technology, Warangal, 506002, India;4. Vidya Jyothi Institute of Technology, Aziz Nagar Gate, C.B. Post, Hyderabad, 500075, India;1. School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;2. Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand;3. National Metals and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani 12120, Thailand;4. SUT Center of Excellence on Advanced Functional Materials, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;1. Department of Physics, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran;2. Department of Physics, Semnan University, Semnan 35195-363, Iran;3. School of Physics, Damghan University (DU), Damghan, Iran |
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| Abstract: | Multiferroic BiFeO3 nanoparticles and ceramics have been successfully prepared by sol–gel method and following high-pressure synthesis. The denser samples, good crystallization and crystal structure deformation have been obtained via high-pressure synthesis proved by XRD, SEM and Raman spectra. The enhanced magnetization of high-pressure samples attributes to crystal structure deformation; moreover, the enhanced dielectric loss of high-pressure samples results from good crystallization. The better microwave absorption properties can be obtained by high-pressure synthesis, and the minimum reflection loss elevates from ?13 dB at 12.4 GHz to ?17 dB at 11.2 GHz. It means that the high-pressure synthesis can effectively improve microwave absorption properties of multiferroic materials. |
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