Influence of CuO addition to BaSm2Ti4O12 microwave ceramics on sintering behavior and dielectric properties |
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| Affiliation: | 1. Henan Key Laboratory of Research for Central Plains Ancient Ceramics, Pingdingshan University, China;2. Collaborative Innovation Center of Nonferrous Metals, Henan Province, Luoyang 471023, China;3. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China;4. Department of Electronic Materials Engineering, Chonbuk National University, Republic of Korea;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Jianshe Road, Chengdu 610054, PR China;2. Sichuan Special Equipment Inspection Institute, Dongfeng Road, Chengdu 610061, PR China;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. College of Communication Engineering, Chengdu University of Information Technology, Chengdu 610054, China;3. College of Horticulture, Anhui Agricultural University, Hefei 230036, China;1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore;3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 637371, Singapore;4. Medical Institute Department, Sichuan College of Traditional Chinese Medicine, Mianyang 621000, China |
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| Abstract: | Microwave dielectric ceramics of tungsten–bronze-type BaSm2Ti4O12 were prepared by doping CuO (up to 2 wt.%) as the liquid-phase sintering aid. The effects of CuO additive on the densification, micro structure and dielectric properties were investigated. Due to the liquid-phase effect, the sintering temperature of BaSm2Ti4O12 ceramics with 1 wt.% CuO addition can be effectively reduced to 1160 °C, about 200 °C lower than that of pure BaSm2Ti4O12 ceramics, while good microwave dielectric properties of ɛr = 75.8, Q*f = 4914.6 GHz and τf = −7.65 ppm/°C were still achieved. |
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