Low Temperature Sintering and Microwave Dielectric Properties of Li1.0Nb0.6Ti0.5O3 Ceramics

doi:10.3724/SP.J.1077.2007.00315

Abstract

Abstract: Li_1.0Nb_0.6Ti_0.5O₃ (LNT) ceramics were prepared at 900℃ by adding B₂O₃-ZnO-La₂O₃ (BLZ) glass as sintering agent, and the densification process and the microwave dielectric properties of the material were investigated. The results show that the BLZ glass can effectively decrease the sintering temperature of the material. Beside the main crystal phase Li_1.0Nb_0.6Ti_0.5O₃, LaNbTiO₆ is found in the material, which is believed to be the product of the reaction between LNT and BZL glass during sintering. Adding BZL glass to LNT ceramics leads to the decrease of dielectric constant k and the quality factor Q×f of the material, but at the same time, helps to improve the temperature coefficient of resonant frequency τf. The low firing Li1.0Nb0.6Ti0.5O3 ceramic is possessed with k≈8, Q×f≈4800GHz and τ_f≈11×10-6/℃.

Key words: Li1.0Nb0.6Ti0.5O3 ceramics, low firing, dielectric properties, B2O3-ZnO-La2O3 glass

CLC Number:

TQ174

GUAN En-Xiang,CHEN Wei,LUO Lan. Low Temperature Sintering and Microwave Dielectric Properties of Li_1.0Nb_0.6Ti_0.5O₃Ceramics
[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00315.

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Low Temperature Sintering and Microwave Dielectric Properties of Li_1.0Nb_0.6Ti_0.5O₃Ceramics

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