摘要
The double perovskite Ba2Fe1+xMo1−xO6 (x=0.0,19,29 and 13) oxides have been prepared by different methods in order to investigate their structure, magnetism, and transport behaviors. All compounds synthesized by oxides and carbonates in H2/Ar atmosphere appear a cubic structure without secondary phase. The compounds prepared without Mo metal show high conductivity (ρ∼10−3Ω-cm) with metallic type, ferrimagnetic TC∼340K and μeff∼3μB at 77K. In contrast to that of the compounds prepared without Mo metal, the properties of another samples prepared with Mo metal is found to depend obviously upon the x of the Ba2Fe1+xMo1−xO6 compounds.