Influence of B₂O₃ on sintering behavior and the dielectric properties of Li₂MgSiO₄ ceramics

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  • Influence of B<sub>2</sub>O<sub>3</sub> on sintering behavior and the dielectric properties of Li<sub>2</sub>MgSiO<sub>4</sub> ceramics

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The influence of B2O3 additives on the sintering behavior, microstructure, and dielectric properties of Li2MgSiO4 (LMS) ceramics was investigated. The experimental results showed that doping of LMS ceramics with 2 wt % B2O3 caused a decrease in the sintering temperature from 1250 to 810°C. The ceramics produced were dense with a well-crystallized microstructure where predominantly fine grains of Li2MgSiO4 were formed. The dielectric properties appeared to be dependent on microstructure. The measured dielectric values of 2% B2O3-doped LMS ceramics (εr = 6.61 and tan δ = 1.6 × 10−4 at 1 MHz and εr = 5.84 and tan δ = 7.43 × 10−5 at 8 GHz) indicate their potential for use in applications which require the involvement of low temperature co-fired ceramics (LTCC).

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