| Preparation of Nanocrystalline Rare Earth Mixed Oxides DyFexCo1-xO3-δ and Its Conductivity |
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| 引用本文： | 任引哲,王建英,刘二保. Preparation of Nanocrystalline Rare Earth Mixed Oxides DyFexCo1-xO3-δ and Its Conductivity[J]. 中国稀土学报(英文版), 2002, 20(5): 471-474 |
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| 作者姓名： | 任引哲 王建英 刘二保 |
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| 作者单位： | DepartmentofChemistry,ShanxiNormalUniversity,Linfen041004,China |
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| 基金项目： | ProjectsupportedbytheFundofShanxiProvince ( 2 0 0 2 1 0 2 2 ) |
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| 摘 要： | Nanocrystalline rare earth mixed oxides DyFexCo1-xO3-δ were prepared by sol-gel method and characterized by X-ray diffraction (XRD), thermogravimetric analysis (TG-DTA) and scanning electron microscope(SEM). The results show that DyFexCo1-xO3-δ has the structure of perovskite type at 800℃ for 2 h calcination.The conductivity of the materials at different temperature was measured by four-probe instrumentation and two-pole method. The results show that the conductivity of mixed oxides DyFexCo1-xO3-δ is higher than those of un-mixed oxides DyFeO3 and DyCoO3 and the conductivity is the best at x = 0.8 in the matter of DyFexCo1-xO3-δ. The conduetivity of these materials always increases with the temperature rising and there is an apparent change between 600 and 800℃. However, the spinodals are different with different ration of Fe^3 and Co^3 . This kind of oxide is a conductive pottery material.
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| 关 键 词： | DyFexCo1-xO3-δ 电导率 稀土 纳米晶 制备 混合氧化物 SEM XRD TG-DTA |
Preparation of Nanocrystalline Rare Earth Mixed Oxides DyFexCo1-xO3-δ and Its Conductivity |
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| Ren Yinzhe,Wang Jianying,Liu Erbao. Preparation of Nanocrystalline Rare Earth Mixed Oxides DyFexCo1-xO3-δ and Its Conductivity[J]. Journal of Rare Earths, 2002, 20(5): 471-474 |
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| Authors: | Ren Yinzhe Wang Jianying Liu Erbao |
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| Abstract: | |
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| Keywords: | rare earths sol-gel method nanocrystalline conductivity |
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