Effect of phase purity on dielectric properties of CaCu3+xTi4O12 ceramics |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, Guangdong, PR China;2. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong;1. Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials and Future Industrial Innovation Institute of Emerging Information Storage and Smart Sensor, Xi’an Jiaotong University, Xi’an 710049, China;2. Department of Chemical Engineering, Ordos Institute of Technology, Ordos 017000, China;3. Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices, School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China;2. Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, China;3. Beijing Institute of Aeronautic Materials, Beijing 100095, China;1. Guangxi Key Laboratory of Information Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China;2. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China;3. Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China;4. Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China;1. Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2. Department of Material Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;1. School of Physics & Optoelectric Engineering, Guangdong University of Technology, Guangzhou Higher Education Mega Center, Guangzhou, 510006, China;2. Guangzhou Panyu Polytechnic, Guangzhou, 511483, China |
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| Abstract: | Different amounts of CuO are used to synthesize CaCu3+xTi4O12 (CCxTO, −1 ≤ x ≤ 1) powders in this work. In order to investigate the effects of Cu constituent on the componential, morphological, and dielectric properties, 975 °C is selected as the sintering temperature to prepare the ceramic pellets with different x values from −0.2 to 0.2. They basically keep the same component and morphology despite the different Cu constituents in the ceramics. Cu component has complex effects on their dielectric properties, whose changes are not linear with the Cu increase. However, the CC0.2TO ceramic sample has the most frequency-independent dielectric constant and the lowest dielectric loss. |
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| Keywords: | X-ray diffraction Secondary phase Dielectric properties |
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