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Low-temperature firing and microwave properties of TiO2 modified Li2ZnTi3O8 ceramics doped with B2O3

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Abstract

The low-temperature firing and microwave properties TiO2 modified Li2ZnTi3O8 ceramics with B2O3 addition have been developed. B2O3 addition could reduce the sintering temperature of Li2ZnTi3O8 ceramics from 1,150 to 900 °C, which is attributed to the formation of liquid phases during the sintering process observed by SEM. The 1.5 wt% B2O3 doped Li2ZnTi3O8 ceramics sintered at 900 °C have ε r = 23.3, Q × f = 48,817 GHz, and resonant frequency τ f  = −15.35 × 10−6/°C. Further, due to the compensating effect of rutile TiO2 (τf  = 450 ppm/°C), the temperature coefficient of τf for with TiO2 was adjusted to near zero value. The 1.5 wt% B2O3 doped Li2ZnTi3O8 ceramics with 3 wt% TiO2 dielectrics sintered at 900 °C exhibited the optimal microwave properties: εr = 25.9, Q × f = 46,487 GHz, and τf = −0.35 ppm/°C.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant Nos. 60721001, 51132003 and 61171047.

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Authors and Affiliations

  1. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, China

    Ming He & Huaiwu Zhang

  2. Communication Engineering Department, Chengdu Technological University, Chengdu, China

    Ming He

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  1. Ming He
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  2. Huaiwu Zhang
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Correspondence to Ming He.

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He, M., Zhang, H. Low-temperature firing and microwave properties of TiO2 modified Li2ZnTi3O8 ceramics doped with B2O3 . J Mater Sci: Mater Electron 24, 3303–3308 (2013). https://doi.org/10.1007/s10854-013-1247-6

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  • DOI: https://doi.org/10.1007/s10854-013-1247-6

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