掺杂氧化铈纳米结构的电导率和活化能研究

N. Priya, K. Sandhya, Deepthi N. Rajendran
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引用次数: 10

摘要

摘要:采用固相反应法制备Ce0.8Gd0.2O2−δ (GDC)和Ce0.8Sm0.2O2−δ (SDC)纳米晶材料。合成的纳米固溶体具有立方萤石结构。用FTIR对材料进行定性分析。通过扫描电镜图像对晶粒的形貌、尺寸和形状等进行了识别。GDC的晶粒尺寸小于SDC。GDC的形貌较好。因此,这是电表征。活化能由Arrhenius图(电导率随温度的变化)的斜率计算得到。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on Electrical conductivity and Activation Energy of doped Ceria nanostructures
Abstract Ce0.8Gd0.2O2−δ (GDC) and Ce0.8Sm0.2O2−δ (SDC) nanocrystalline materials are prepared by a solid state reaction method. The synthesized nano crystalline solid solutions have cubic fluorite structure as evident from XRD patterns. The materials are qualitatively analyzed by FTIR. The morphology, size and shape of grains etc. are identified from the SEM images. The grain size of GDC is smaller than that of SDC. The better morphology is obtained for GDC. Hence, this is electrically characterized. The activation energy is calculated from the slope of Arrhenius plot (showing variation of conductivity with temperature).
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