摘要
CaCu_(3)Ti_(4)O_(12)陶瓷不仅具有巨介电常数和优异的非线性I–V特性,而且在较宽的温度和频率范围内有良好的热稳定性,因而在超级电容器、高密度存储器等电子元器件中有广阔的应用前景。然而,CaCu_(3)Ti_(4)O_(12)陶瓷的介电损耗相当高,这直接限制了其在电子元器件上的商业化应用。掺杂改性是一种改善CaCu_(3)Ti_(4)O_(12)陶瓷性能的有效方法,在保持陶瓷巨介电常数的同时能很好地降低介电损耗。本文对近年来CaCu_(3)Ti_(4)O_(12)陶瓷掺杂改性方面的研究做了全面的综述,重点综述了不同掺杂离子对CaCu_(3)Ti_(4)O_(12)陶瓷微观结构和性能方面的影响,并探究了CaCu_(3)Ti_(4)O_(12)陶瓷的巨介电响应机制。
CaCu_(3)Ti_(4)O_(12) ceramics not only have giant dielectric constants and excellent nonlinear I–V characteristics but also have good thermal stabilities in a wide temperature and frequency range,so they have broad application prospects in supercapacitors,high-density memory,and other electronic components.However,the dielectric losses of CaCu_(3)Ti_(4)O_(12) ceramics are quite high,which directly limits their commercial applications in electronic components.Doping modifications are an effective strategy to improve the performance of CaCu_(3)Ti_(4)O_(12) ceramics,successfully reducing the dielectric losses while maintaining the giant dielectric constants.Therefore,the research on doping modifications of CaCu_(3)Ti_(4)O_(12) ceramics in recent years was comprehensively reviewed in this paper,focusing on the effects of different doping ions on the microstructures and performance.Additionally,the mechanisms underlying the colossal dielectric response in CCTO ceramics are explored.
作者
唐鹿
TANG Lu(The Center of Collaboration and Innovation,Jiangxi University of Technology,Nanchang 330098)
出处
《中国陶瓷》
北大核心
2025年第8期1-6,共6页
China Ceramics
基金
江西省自然科学基金资助项目(20202BABL204072)
江西省教育厅科学技术研究项目(GJJ190989)
江西科技学院博士科研启动费资助项目(江科发[2015]66号)。
