液相法制备CCTO及其巨介电机理的研究

1.西南石油大学材料科学与工程院,四川成都610500

2.西南石油大学材料科学与工程院,四川成都610500

3.西南石油大学材料科学与工程院,四川成都610500

4.西南石油大学材料科学与工程院,四川成都610500

5.西南石油大学材料科学与工程院,四川成都610500

The Preparation of CCTO through Liquid Phase Method and The Study of Its Giant Permittivity Mechanism

利用溶胶凝胶法制备了CaCu3 Ti4 O12 (CCTO),相对介电常数高达123000.通过对不同温度烧结的样品断口进行能谱分析,发现晶界有明显的Cu富集,而且样品介电常数以及电导率均与晶界处Cu含量成正比.分析了Cu的偏析度对介电常数的影响及其巨介电机理.

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