Low temperature sintered giant dielectric permittivity CaCu_(3)Ti_(4)O_(12) sol-gel synthesized nanoparticle capacitors

作     者：Venkata Sreenivas Puli Shiva Adireddy Manish Kothakonda Ravinder Elupula Douglas B.Chrisey 

作者机构：Department of Physics and Engineering PhysicsTulane University New OrleansLA 70115USA Department of ChemistryTulane UniversityNew OrleansLA 70115USA 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2017年第7卷第3期

页      面：14-23页

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Science Foundation under grant NSF-EFRI RESTOR#1038272 

主　　题：CCTO cubic giant dielectric permittivity IBLC grain growth. 

摘      要：This paper reports on synthesis of polycrystalline complex perovskite CaCu_(3)Ti_(4)O_(12)(as CCTO)ceramic powders prepared by a sol–gel auto combustion method at different sintering temperatures and sintering times,*** effect of sintering time on the structure,morphology,dielectric and electrical properties of CCTO ceramics is *** the electrical properties via different sintering times is demonstrated for ceramic samples.X-ray diffraction(XRD)studies confirm perovskite-like structure at room *** grain growth is observed for ceramic *** dielectric permittivity was realized for CCTO *** dielectric permittivity was attributed to the internal barrier layer capacitance(IBLC)model associated with the Maxwell–Wagner(MW)polarization mechanism.