Bismuth/Samarium Cosubstituted Ba6−3xNd8+2xTi18O54 Microwave Dielectric Ceramics |
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Authors: | Yong Jun Wu Xiang Ming Chen |
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Affiliation: | Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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Abstract: | Modification of the microwave dielectric properties in Ba6−3 x Nd8+2 x Ti18O54 ( x = 0.5) solid solutions by Bi/Sm cosubstitution for Nd was investigated. A large increase in the dielectric constant and near-zero temperature coefficient combined with high Qf values were obtained in modified Ba6−3 x Nd8+2 x Ti18O54 solid solutions where an enlarged solid solution limit of Bi in Ba6−3 x Nd8+2 x Ti18O54 was observed. Excellent microwave dielectric characteristics (ɛ= 105, Qf = 4110 GHz, and very low τf) were achieved in the composition Ba6−3 x (Nd0.7Bi0.18Sm0.12)8+2 x Ti18O54. |
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Keywords: | dielectric materials microwaves bismuth |
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