Improving the Dielectric Properties of the ‎Ba(Zr0.1Ti0.9)O3-based Ceramics by Adding ‎a Li2O–SiO2 Sintering Agent Step by Step ‎

Document Type : Research Paper

Authors

1 Faculty of Chemistry and Chemical Engineering, Engineering Research Center of Advanced ‎Ferroelectric Functional Materials, Key Laboratory of Phytochemistry of Shaanxi Province, ‎Baoji University of Arts and Sciences, P.O.Box 721013, Baoji, People’s Republic of China.‎

2 Faculty of Chemistry and Materials Science, Northwest University, P.O.Box 710127, Xi’an, ‎People’s Republic of China.‎

Abstract

   To meet the needs of future multilayer ceramic capacitors(MLCCs), a low sintering temperature, higher capacitance and thinner dielectric layers are necessary. To achieve this goal, an appropriate sintering agent and appropriatedoping technique must be developed to reduce the sintering temperature and optimize the ceramic’smicrostructure. In this study, we researched the effect of Li2O-SiO2 (Li-Si-O) and how it is added on the dielectric properties of the Ba(Zr0.1Ti0.9)O3-based ceramics. The dielectric constant increased significantly by adding Li-Si-O stepbystep, but decreased with addition in a one-step. The dielectric constantincreased first and then decreased with the increasing of Li-Si-O content, and reached a maximum of 18942 at 0.10 wt% Li-Si-O, and the temperature-capacitance characteristic (TCC) of the samples with a Li-Si-O content less than 0.20 wt% met the Y5V standards. The Li-Si-O reduced the sintering temperature of the Ba(Zr0.1Ti0.9)O3-basedceramics to 1100 °C, and the dielectric constant first increased and then decreased with increasing sintering temperature increasing.

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