Clues to the Giant Dielectric Constant of CaCu 3 Ti 4 O 12 in the Defect Structure of “SrCu 3 Ti 4 O 12 ”

作者：J. Li, M.A. Subramanian, H. David Rosenfeld, C. Jones, Brian H. Toby, A.W. Sleight · 发表于：Chemistry of Materials · 年份：2004 · DOI：10.1021/cm048345u · 被引用次数：272 · 研究领域：Dielectric properties of ceramics、Multiferroics and related materials、Ferroelectric and Piezoelectric Materials

The high dielectric constant in “SrCu3Ti4O12” and the giant dielectric constant in CaCu3Ti4O12 are based on a barrier layer mechanism. Conductivity in the conducting regions is related to Ti on Cu sites. The insulating barriers are between crystallites in “SrCu3Ti4O12” but within the crystallites in CaCu3Ti4O12.