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《Journal of Transducer Technology》 2003-09
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Synthesis and ethanol-sensitive properties of SmFeO_3 in the system of citrate

NIU Xin-shu, DU Wei-min, DU Wei-ping, JIANG Kai ironmental Sci and Engin Education Commission of Henan, Henan Normal University,Xinxiang 453002,China)  
With the Sm2O3,Fe(NO3)3·9H2O,nitric acid for the raw material,rare earth composite oxide SmFeO3 which has the structure of perovskite was synthesized by using sol-gel method in the system of citrate.Its composition,size and shape were characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM).The results show that the sample is nanocrystalline and its mean grain size is 30nm or so and the grain is even.Moreover,the gas-sensitive properties of the material are tested by adopting static-gas method.The results show that SmFeO3 has higher sensitivity to ethanol and anti-interference ability.So it has a better prospect in practice.
【Fund】: 河南省自然科学基金资助项目(004030300);; 河南省教育厅自然科学基金资助项目(20021500007)
【CateGory Index】: O614.8
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