Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation
来源期刊：JOURNAL OF RARE EARTHS2004年第6期
论文作者：韦永德 陈刚 李中华 苏铭汉 李昕
Key words：sodium tungsten bronze; rare earths gaseous permeation; structural analysis; conductivity; rare earths;
Abstract: The cubic sodium tungsten bronzes, NaxWO3(x=0.854 and 0.814)were prepared by rare earths gaseous permeation method. Structural analysis was carried out by Rietveld method from powder X-ray diffraction data. The X-ray diffraction profile calculated with cubic P32 models are in good agreement with the observed X-ray diffraction patterns. There is only a little difference in W-O bond and Na-O bond between Na0.854WO3 and Na0.814WO3. Conductivity measurements indicate that NaxWO3 show anomalous semiconducting behavior and percolation model was used to interpret it.
韦永德1，陈刚1，李中华1，苏铭汉1，李昕1
(1.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China)
Abstract:The cubic sodium tungsten bronzes, NaxWO3(x=0.854 and 0.814)were prepared by rare earths gaseous permeation method. Structural analysis was carried out by Rietveld method from powder X-ray diffraction data. The X-ray diffraction profile calculated with cubic P32 models are in good agreement with the observed X-ray diffraction patterns. There is only a little difference in W-O bond and Na-O bond between Na0.854WO3 and Na0.814WO3. Conductivity measurements indicate that NaxWO3 show anomalous semiconducting behavior and percolation model was used to interpret it.
Key words:sodium tungsten bronze; rare earths gaseous permeation; structural analysis; conductivity; rare earths;
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