哈尔滨工业大学学报（英文版）2003，Vol.10Issue(4)：388-391,4.
Electric characteristics of Nd2O3 doped BaTiO3 ceramics
Electric characteristics of Nd2O3 doped BaTiO3 ceramics
摘要
Abstract
Nd2O3 doped BaTiO3ceramics( the additive content was respectively 0. 001,0. 002, 0. 003, 0. 005,O. 01 molar ratio)were prepared by Sol-Gel method to study their dielectric characteristics and electric conductivities through X-ray photoelectron spectrum (XPS). The results showed that the dielectric characteristics of Nd2O3 doped BaTiO3 ceramics were improved by doping. When Nd2O3 content was 0. 003 mol, the results were even better, the dielectric constant was increased, the dielectric loss was decreased, the Curie-temperature (Tc) was 110 ℃, and the frequency characteristic was also good. The resistivity of Nd2O3 doped BaTiO3 ceramics was lower than that of pure BaTiO3 ceramics, when Nd2O3 content was 0. 001 mol,the resistivity was but the grain boundary resistance showed PTC effect, and the grain boundary resistance was larger than that of the grain resistance, so the PTC effect originated from the grain boundary. The analysis of the element binding energy through X-ray photoelectron spectrum were indicated that the quantivalence of Ba2 + and Ti4+ in Nd2O3doped BaTiO3 ceramics was variable, and resulted in the improvement of the conductibility of BaTiO3 ceramics.关键词
BaTiO3 ceramics/Nd2 O3 doped/dielectric characteristic/electric conductivityKey words
BaTiO3 ceramics/Nd2 O3 doped/dielectric characteristic/electric conductivity分类
化学化工引用本文复制引用
郝素娥,韦永德..Electric characteristics of Nd2O3 doped BaTiO3 ceramics[J].哈尔滨工业大学学报（英文版）,2003,10(4):388-391,4.基金项目
Sponsored by the Major Project of Heilongjiang Province( Grant No. GB02A301 ). （ Grant No. GB02A301 ）
