Ferroelectric phase transition and optical performance of PLZnNZT transparent ceramics |
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| Institution: | 1. School of Information Science and Engineering, School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Changzhou 213164, China;2. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China;1. Microelectronics and Materials Physics Laboratories, Department of Electrical Engineering, University of Oulu, P.O. Box 4500, 90014 Oulu, Finland;2. Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan;3. Department of Material Science and Engineering, National United University, Miao-Li 36003, Taiwan;1. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;2. National Metal and Materials Technology Center, Pathumthani 12120, Thailand;3. Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. Laser & Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005, India;2. Department of Physics & Astrophysics, University of Delhi, 110007, India;1. Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi''an, 710062, Shaanxi, China;2. School of Physics & Information Technology, Shaanxi Normal University, Xi''an, 710062, Shaanxi, China;1. Department of Physics, Guru Nanak Dev University, Amritsar, Punjab, 143005, India;2. Department of Physics,Vasavi College of Engineering, Ibrahimbagh, Hyderabad, 500031, India |
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| Abstract: | Lead-based Pb0.97La0.02(Zn1/3Nb2/3)0.3(Zr0.53Ti0.47)0.7O3 (PLZnNZT) transparent ceramics with the addition of 2 wt% excess PbO were prepared by hot-pressing sintering method. The hot-pressing sintered PLZnNZT ceramics exhibit dense and large-grained microstructure, and perovskite structure with distorted cubic-like symmetry. The ceramics exhibit normal ferroelectric-like dielectric behavior with slightly diffused ferroelectric phase transition characteristic. The PLZnNZT ceramics exhibit fully developed, symmetric and saturated P–E hysteresis loop and large piezoelectric constant d33, being 468 pC/N. The ceramics with 120 μm thickness exhibit maximum transmittance of 53% at 850 nm when Fresnel losses was not included, almost totally transparent in the mid IR region (2500–5600 nm), and low-lying optical band gap energy Eg of 3.23 eV. Three diffused Raman bands centering around 240 cm?1, 560 cm?1 and 750 cm?1 are observed by micro-Raman spectroscopy, which can be attributed to F2g BO6] bending vibration, A1g BO6] stretching vibration and “soft mode” mixed by the bending and stretching vibrations, respectively, confirming the normal ferroelectric-like characteristic. |
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| Keywords: | Ceramics X-ray diffraction Electrical properties Optical properties |
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