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一種陶瓷電容介電材料，其組成是以BaTiO 3、BaZrO 3及SrTiO 3為主體，並混合MgCO 3、SiO 2及至少一種或一種以上的化合物，該化合物係選自於過渡元素或稀土元素，其中，BaTiO 3之莫耳百分比介於40至80%、BaZrO 3之莫耳百分比介於20至40%、SrTiO 3之莫耳百分比小於或等於20%，合成為具有立方相結構之順電性陶瓷電容介電材料，而本發明所製成之陶瓷電容介電材料之介電常數係大於350、介電損失低於0.5%，且電阻係數在室溫時能到~10 12[Ω-cm]、且在125℃時能到能達到~10 11[Ω-cm]，除此之外，本發明所製成之陶瓷電容介電材料於直流偏壓下的電容變化率表現優異，故本發明的介電陶瓷混合物可以滿足EIA之X7T介電特性。
A ceramic capacitor dielectric material includes BaTiO3, BaZrO3, SrTiO3, MgCO3, SiO2, and at least one compound selected from transition element and rare earth element. The amount of the BaTiO3 in the ceramic capacitor dielectric material is 40-80 mol %; the amount of the BaZrO3 is 20-40 mol %; and the amount of the SrTiO3 is smaller than or equal to 20 mol %. The permittivity of the ceramic capacitor dielectric material is larger than 350, and the dielectric loss is lower than 0.5%. Moreover, the resistivity can reach 1012 Ω-cm under room temperature, and further reach 1011 Ω-cm at 125° C. Besides that, the performance of the capacitance change rate of the ceramic capacitor dielectric material under DC bias is excellent, thus the ceramic capacitor dielectric material can fulfill the X7T dielectric properties of EIA.

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