Fatigue-resistant,temperature-insensitive strain behavior and strong red photoluminescence in Pr-modified 0.92(Bi0.5Na0.5)TiO3–0.08(Ba0.90Ca0.10)(Ti0.92Sn0.08)O3 lead-free ceramics |
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| Affiliation: | 1. College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, People’s Republic of China;2. The State Key Lab of High Performance Ceramics and Superfinemicrostructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People’s Republic of China;1. Departamento de Ingeniería Mecánica, Energética y de los Materiales, Universidad de Extremadura, 06006 Badajoz, Spain;2. Instituto de Cerámica y Vidrio, Consejo Superior de Investigaciones Científicas, 28049 Madrid, Spain;3. Department of Materials, University of Oxford, OX1 3PH, UK;1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Materials Synthesis and Processing IEK-1, D-52425 Jülich, Germany;2. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, Microstructure and Properties of Materials IEK-2, D-52425 Jülich, Germany;1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China;2. University of Chinese Academy of Sciences, Beijing, China;1. University of Silesia, Institute of Chemistry, Szkolna 9, 40-007 Katowice, Poland;2. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland;1. Department of Inorganic Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic;2. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky sq. 2, 120 06 Prague, Czech Republic |
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| Abstract: | An electric-field-induced large strain and strong photoluminescence was achieved by introducing trivalent Pr3+ as the activator into 0.92(Bi0.5Na0.5)TiO3 − 0.08(Ba0.90Ca0.10)(Ti0.92Sn0.08)O3 (BNT−8BCST) ceramics. Around a critical composition of 0.4 mol% Pr3+, a large strain of ∼0.39% with a relatively small hysteresis compared with existing lead-free Bi-perovskite ceramics was obtained. In particular, the strain is very resistant to field cycling and thermal shock, giving the materials attractive for its exceptionally good fatigue resistance and high temperature stability. Besides the excellent electrical properties, Pr3+-modified BNT−8BCST host exhibits a strong photoluminescence with a bright red emission at 610 nm assigned to 1D2 → 3H4 transitions of the Pr3+ ions upon a blue light excitation of 400–500 nm. The photoluminescence can be enhanced through poling treatment of the samples. Moreover, samples have a superior water resistance property which almost maintaining the same photoluminescence intensity after 40 h water immersion time. These results suggest the material may have potential application as a multifunctional device such as “on-off” actuator and electric field-controlled photoluminescence devices by integrating its excellent luminescence and electrical properties. |
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| Keywords: | Ceramics Ferroelectrics Electrical properties Fatigue Luminescence |
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