| 摘要 |
PURPOSE: A ceramic composition for a high frequency ceramic resonator and filter and its preparation method are provided, wherein the composition shows improved strength compared with a PZT-based one and a high anisotropy. CONSTITUTION: The ceramic composition comprises Pb0.88(La0.6Nd0.4)0.08(Mn1/3Sb2/3)0.02Ti0.98O3; 0.1 wt% excess of PbO; 1 wt% of MnO2; and α wt% of CuO, wherein α is 0, 0.15, 0.6, 0.75 or 1.0. The method comprises the steps of mixing the composition and pulverizing the mixture; drying the pulverized ceramic composition; calcining the dried ceramic composition; milling the calcined ceramic composition; molding the milled ceramic composition; and sintering the molded ceramics. Preferably CuO is added in the pulverizing process.
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