Low‐firing and temperature stable microwave dielectric ceramics: Ba2LnV3O11 (Ln = Nd,Sm) |
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| Authors: | Chunchun Li Huaicheng Xiang Minyu Xu Jibran Khaliq Junqi Chen Liang Fang |
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| Affiliation: | 1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing, Guangxi Universities Key Laboratory of Non‐Ferrous Metal Oxide Electronic Functional Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, Guilin, China;2. College of Information Science and Engineering, Guilin University of Technology, Guilin, China;3. Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, United Kingdom |
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| Abstract: | Low‐firing and temperature stable microwave dielectric ceramics of Ba2LnV3O11 (Ln = Nd, Sm) were prepared by solid‐state reaction. X‐ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the phase purity, crystal structure, sintering behavior, and microstructure. The XRD patterns indicated that Ba2LnV3O11 (Ln = Nd, Sm) ceramics belong to monoclinic crystal system with P21/c space group in the whole sintering temperature range (800°C ‐900°C). Both ceramics could be well densified at 880°C for 4 hours with relative densities higher than 96%. The Ba2LnV3O11 (Ln = Nd, Sm) samples sintered at 880°C for 4 hours exhibited excellent microwave dielectric properties: εr = 12.05, Q × f = 23 010 GHz, τf = ?7.7 ppm/°C, and εr = 12.19, Q × f = 27 120 GHz, τf = ?16.2 ppm/°C, respectively. Besides, Ba2LnV3O11 (Ln = Nd, Sm) ceramics could be well co‐fired with the silver electrode at 880°C. |
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| Keywords: | Ba2LnV3O11 (Ln = Nd, Sm) chemical compatibility LTCC microwave dielectric properties |
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