SrLnAlO4 (Ln=Nd and Sm) Microwave Dielectric Ceramics |
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Authors: | Xiang Ming Chen Yang Xiao Xiao Qiang Liu Xing Hu |
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Affiliation: | (1) Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China |
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Abstract: | SrLnAlO4 (Ln=Nd and Sm) ceramics with K2NiF4 structure were prepared by a solid state reaction approach, and their microwave dielectric characteristics were evaluated together with the microstructures. The single phase dense SrNdAlO4 and SrSmAlO4 ceramics were obtained by sintering at 1450–1475°C and 1475–1500°C, respectively, and the good microwave dielectric characteristics were achieved: (1) = 17.8, Q · f = 25,700 GHz,
f
= –9 ppm/°C for SrNdAlO4; and (2) = 18.8, Q · f = 54,880 GHz,
f
= 2 ppm/°C for SrSmAlO4 dense ceramics. The Qf value significantly increased with increasing sintering temperature. |
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Keywords: | SrLnAlO4 microwave dielectric properties ceramics sintering microstructures |
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