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- W2797718192 abstract "In order to solve the problems of acceptor/donor individual doping in Li2TiO3 system and clarify the superiority mechanism of co-doping for improving the Q value, Mg + Nb co-doped Li2TiO3 have been designed and sintered at a medium temperature of 1260°C. The effects of each Mg/Nb ion on structure, morphology, grain-boundary resistance and microwave dielectric properties are investigated. The substitution of (Mg1/3Nb2/3)4+ inhibits not only the diffusion of Li+ and reduction in Ti4+, but also the formation of microcracks in ceramics, which promotes the enhancement of Q value. The experiments reveal that Q × f value of Li2TiO3 ceramics co-doped with magnesium and niobium is 113 774 GHz (at 8.573 GHz), which is increased by 113% compared with the pure Li2TiO3 ceramics. And the co-doped ceramics have an appropriate dielectric constant of 19.01 and a near-zero resonance frequency temperature coefficient of 13.38 ppm/°C. These results offer a scientific basis for co-doping in Li2TiO3 system, and the outstanding performance of (Mg + Nb) co-doped ceramics provides a solid foundation for widespread applications of microwave substrates, resonators, filters and patch antennas in modern wireless communication equipments." @default.
- W2797718192 created "2018-04-24" @default.
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- W2797718192 date "2018-04-18" @default.
- W2797718192 modified "2023-10-14" @default.
- W2797718192 title "High‐Q microwave ceramics of Li <sub>2</sub> TiO <sub>3</sub> co‐doped with magnesium and niobium" @default.
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- W2797718192 doi "https://doi.org/10.1111/jace.15579" @default.
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