Highly transparent polycrystalline Gd2O3 ceramic attained via ZrO2 stabilization effect |
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| Affiliation: | 1. College of Physics, Sichuan University, Chengdu 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China;3. Key Laboratory of High Energy Density Physics of Ministry of Education, Sichuan University, Chengdu 610064, China;1. School of Materials Science and Engineering, Chang’an University, Xi’an 710061, China;2. State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China;1. College of Physics, Sichuan University, Chengdu, 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, 610064, China;3. Key Laboratory of High Energy Density Physics of Ministry of Education, Sichuan University, Chengdu, 610064, China;4. Institute for Advanced Study, Chengdu University, Chengdu, 610106, China;1. College of Physics, Sichuan University, Chengdu 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China;3. Institute for Advanced Study, Chengdu University, Chengdu 610106, China;4. Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99164, United States;5. The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, United States;6. Department of Chemical Engineering, Çank?r? Karatekin University, Çank?r? 18100, Turkey;7. Department of Chemistry, Washington State University, Pullman, WA 99164, United States;8. Materials Science and Engineering, Washington State University, Pullman, WA 99164, United States;9. Key Laboratory of High Energy Density Physics of Ministry of Education, Sichuan University, Chengdu 610064, China;1. Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague, Czech Republic;2. Department of Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy;3. CICECO-Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;4. INSTM, National Interuniversity Consortium of Materials Science and Technology, via G. Giusti 9, 50121 Florence, Italy;1. Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China;2. Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo, Zhejiang, 315211, China;3. Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China |
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| Abstract: | The transition from the cubic to monoclinic phase of Gd2O3 at high temperatures poses a significant challenge to the preparation of transparent Gd2O3 materials. In this work, we presented a straightforward yet effective method for fabricating transparent Gd2O3 ceramics. Via ZrO2 stabilization effect for phase structure, highly transparent Gd2O3 ceramics were successfully fabricated by vacuum sintering at 1850 °C for 8 h. The effect of different Zr (0 ～ 13 at%) concentrations on phase transition, grain growth, fracture mode and optical properties of Gd2O3 transparent ceramics was investigated. As the Zr content increases, the transition from the cubic (C) to monoclinic (M) phase is effectively suppressed, which is crucial for achieving Gd2O3 transparent ceramics. Moreover, the results indicate that the addition of ZrO2 has a significant effect on grain growth by not only impeding the migration of grain boundaries but also affecting the phase composition. In addition, the 11 at% Zr-doped Gd2O3 ceramic exhibits the best optical properties, of which transmittance is about 76% at 850 nm and about 80% in the 2.5 µm ～ 6 µm mid-infrared range. This work provides an illustrative example for the development of other ceramics with phase transition. The obtained Zr-doped Gd2O3 transparent ceramics with high optical quality are potential candidates for optical window, scintillator host and mid-infrared transmission materials. |
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| Keywords: | Phase transition Zirconia Optical properties |
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