Microwave Dielectric Properties of a New A5B4O15-Type Cation-Deficient Perovskite Ba2La3Ti3TaO15 |
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| Authors: | Liang Fang Qian Yu Hui Zhang C Z Hu B L Wu |
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| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China; Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004, China |
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| Abstract: | High dielectric constant and low loss ceramics with composition Ba2La3Ti3TaO15 have been prepared by a conventional solid-state ceramic route. This compound adopts A5B4O15 cation-deficient hexagonal perovskite structure. The dielectric properties of dense ceramics sintered in air at 1520°C have been characterized at microwave frequencies. It shows a relative dielectric constant of ∼45, quality factor Q u× f of ∼26 828 GHz and temperature variation of resonant frequency of −0.97 ppm/°C. |
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