Regulation on the non-ohmic properties of CaCu3 Ti4 O12 ceramics material by yttriumion doping on calcium
CHEN Zhen-ping
XIANG Hui-wen
LI Tao
ZHANG Yu
CHEN Xin
SUN Xin-ke
Abstract：The polycrystalline Ca(1-x)Yx Cu3 Ti4 O12( x = 0,0. 005,0. 010,0. 015,0. 020,0. 030,0. 040) ceramics samples were prepared by traditional solid-state reaction method. The microstructure and non-ohmic properties were characterized by X-ray diffraction,scanning electron microscope and the high-voltage digital source-meter. The effect mechanism of the variation in grain boundary barrier on the non-ohmic properties was also discussed. The results presented that there was no phase transition in Y3 + -doped CaCu3 Ti4 O12 samples,while the grain growth was related to the doping content. Both the density and chemi-cal environment in grain boundary of samples were influenced by doping. The non-ohmic properties of CaCu3 Ti4 O12 ceramics material were modified by Y3 + doping,and both non-linear coefficient and break-down voltage were apparently enhanced by doping with the appropriate content(x = 0. 010 ~ 0. 020).
Keywords：yttrium ion doping on calciumCaCu3 Ti4 O12 ceramics materialnon-ohmic propertybarrier height
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 6-10 )