烟台大学学报（自然科学与工程版）2011，Vol.24Issue(2)：97-100,4.
氧化物材料HoMnO3的复阻抗谱分析
Complex Impedance Spectroscopy Analysis of HoMnO3 Oxide Materials
摘要
Abstract
The dielectric response of grains and grain boundary of oxide polycrystal-line materials are simulated in this paper, we analyze the relationship between impedance and resistance or capacitance,the accuracy of the fitting data being verified by using the slope of impedance spectroscopy. Perovskite oxide materials HoMnO3 is prepared with high temperature solid reaction, and dielectric response is analyzed by complex impedance spectroscopy in 650Hz - 1MHz. The results show that the material is composed of grains and grain boundary,and high-frequency part shows grain response, low-frequency shows the grain boundary behavior. The resistances of grain and grain boundary which can be obtained by fitting are about 105Ω and 106 Ω, respectively; the capacitances of grain and grain boundary are both about 10-9F.关键词
复阻抗/晶粒和晶界/弛豫频率Key words
impedance/ grain and grain boundary/ relaxation frequency分类
数理科学引用本文复制引用
张立新,袁德华,赵玉杰,戴振宏,王伟田..氧化物材料HoMnO3的复阻抗谱分析[J].烟台大学学报（自然科学与工程版）,2011,24(2):97-100,4.基金项目
国家自然科学基金资助项目(10704065) （10704065）
山东省自然科学杰出青年基金资助项目(JQ200802). （JQ200802）
