Crystal structure and piezoelectric characteristics of various phases near the triple-point composition in PZ-PT-PNN system |
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| Affiliation: | 1. Department of Nano Bio Information Technology, KU-KIST Graduate School of Converging Science and Technology, Korea University, 141 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea;2. Department of Materials Science and Engineering, Korea University, 141 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea;3. Electronic Materials and Device Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi-do, Republic of Korea;4. Korea Institute of Ceramic Engineering and Technology, 101, Soho-Ro, Jinju-Si, Gyeongsangnam-do 660-031, Republic of Korea;5. Department of Materials Science and Engineering, Hoseo University, 20, Hoseo-ro 79 beongil, Baebang-eup, Asan-si, Chungcheongnam-do 31499, Republic of Korea;6. Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea;7. Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02791, Republic of Korea;1. Department of Nano Bio Information Technology, KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea;2. Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea;3. School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea;4. Electronic Materials and Device Research Center, Korea Electronics Technology Institute, Seongnam, Gyeonggi-do, South Korea;5. Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02791, Republic of Korea;1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;2. Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China;3. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;1. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR China;2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, PR China;3. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA;1. School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, PR China;2. Engineering Research Centre for Functional Ceramics, Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, PR China;3. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, PR China;4. Institute of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Straße 2, 64287, Darmstadt, Germany;1. Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea;2. Department of Nano Bio Information Technology, KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea |
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| Abstract: | Crystal structures and piezoelectric properties of PbZrO3-PbTiO3-Pb(Ni1/3Nb2/3)O3 ceramics near the triple point composition, particularly characteristics of the pseudocubic phase, were investigated. The pseudocubic phase, which formed near the triple point composition, disappeared with increase in the PbZrO3 content. The pseudocubic phase had the Pm3m cubic structure. The tetragonal-pseudocubic morphotropic phase boundary (MPB) structure was developed during the tetragonal-to-cubic phase transformation. However, the rhombohedral phase directly transformed to the cubic phase because the structure of pseudocubic phase was similar to the rhombohedral structure. The specimens with pseudocubic phase and the specimens near pseudocubic phase exhibited nano-sized domains and small coercive electric fields, revealing their low domain wall energies. These specimens exhibited second-order ferroelectric-to-paraelectric phase transition and low Curie temperatures, confirming their low domain wall energies. The enhanced dielectric and piezoelectric properties of these specimens could be attributed to their low domain wall energies. |
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| Keywords: | Piezoelectricity Ceramic material Phase diagram Nanodomains Landau theory |
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