非铁电性巨介电材料CaCu_3Ti_4O_(12)的研究进展  

Progress in non-ferroelectric giant dielectric material CaCu_3Ti_4O_(12)

作　　者：湛海涯[1] 王艳[1] 李蕾蕾[1] 刘宇[1] 崔斌[1] 

机构地区：[1]合成与天然功能分子化学教育部重点实验室陕西省物理无机化学重点实验室西北大学化学与材料科学学院,陕西西安710069

出　　处：《宝鸡文理学院学报（自然科学版）》2012年第3期20-27,共8页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：国家自然科学基金(No.21071115);陕西省教育厅科学研究计划项目(产业化培育项目;No.09JC01)资助

摘　　要：目的综述介电材料CaCu3Ti4O12(CCTO)研究的新进展,提出本研究领域需要进一步深入的方面,并在此基础上分析其发展前景。方法在介绍CCTO相结构的基础上,对其巨介电机制模型、制备方法、掺杂改性及其复合材料的研究进展进行总结。结果根据CCTO巨介电机制模型,设计新的巨介电材料或者复合材料,进一步降低其介电损耗,开发该类巨介电材料的应用新领域。结论 CCTO陶瓷具有巨介电常数及优异的温度稳定性,进一步降低其介电损耗将有很好的应用前景。Aim To propose some aspects needing further promotion in the research and analyze its prospect on this basis by reviewing the new progress in the research and development of dielectric materials CaCu3 Ti4 O12 （CCTO）. Methods Base on the introduction of the crystal structure, research progress in the mechanism for its high dielectric constant, the synthesis methods, the influence of doping and composite materials were summarized. Results According to the mechanism for the high di- electric constant of CCTO, new giant dielectric material or composite materials are designed to further decrease the dielectric loss, new applied fields of this kind of material with giant dielectric constant are exploited. Conclusion The CCTO shows a giant dielectric constant and excellent temperature stabili ty, the further decrease of dielectric loss would make it have better prospects.

关 键 词：CCTO 巨介电机制 制备方法 掺杂改性 复合材料 

分 类 号：O614[理学—无机化学]