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采用传统固相法制备了Ca1-xBaxCu3Ti4O12(x=0,0.005,0.010,0.020,0.030,0.040,0.050,0.100,摩尔分数)陶瓷。用X线衍射仪、扫描电子显微镜、介电温谱测试系统及阻抗测试仪研究了Ba^2+掺杂量的变化对Ca1-xBaxCu3Ti4O12陶瓷的相结构、微观形貌及电性能影响。研究结果表明,随着Ba^2+掺杂量的增加,陶瓷试样产生了第二相CuO,同时Ba^2+掺杂使CaCu3Ti4O12的晶格常数增大。Ca1-xBaxCu3Ti4O12陶瓷的晶粒尺寸随Ba^2+