Microwave Sintering of (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 Dielectric Ceramics

Abstract

Abstract: 0.85(Mg0.7Zn0.3)TiO3-0.15(Ca0.61La0.26)TiO3 ((Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3) system ceramics were prepared by microwave sintering.The effects of microwave sintering process on the sintering behaviour, microstructure, phase composition and microwave dielectric properties of ceramics were investigated.The results show that (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 ceramics exhibited mixed phases of (Mg0.7Zn0.3)TiO3 and Ca0.61La0.26TiO3 as the main phase associated with minor phases of (Mg0.7Zn0.3)Ti2O5.When heating rate is 15 ℃/min, the (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 ceramics exhibit excellent microwave dielectric properties:εr=27.01,Q·f=103500 GHz,τf=+2 ppm/℃ sintered at 1275 ℃ for 20 min.

Key words: 0.85(Mg0.7Zn0.3)TiO3-0.15(Ca0.61La0.26)TiO3 ((Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3) system ceramics were prepared by microwave sintering.The effects of microwave sintering process on the sintering behaviour, microstructure, phase composition and microwave dielectric properties of ceramics were investigated.The results show that (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 ceramics exhibited mixed phases of (Mg0.7Zn0.3)TiO3 and Ca0.61La0.26TiO3 as the main phase associated with minor phases of (Mg0.7Zn0.3)Ti2O5.When heating rate is 15 ℃/min, the (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 ceramics exhibit excellent microwave dielectric properties:εr=27.01,Q·f=103500 GHz,τf=+2 ppm/℃ sintered at 1275 ℃ for 20 min.

CLC Number:

TQ174

ZHAO Li;HU Yu-ye;LI Dan;LIU Qiu-yan;SHEN Chun-ying. Microwave Sintering of (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 Dielectric Ceramics[J]. Journal of Synthetic Crystals, 2017, 46(3): 526-530.

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Microwave Sintering of (Mg0.7Zn0.3)TiO3-Ca0.61La0.26TiO3 Dielectric Ceramics

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