Nanocrystalline rare earth mixed oxides SmFe_(1-x)Co_xO_(3-delta) wereprepared by sol-gel method at 1 073 K for 2 h calcination and characterized by X-ray diffraction(XRD) and scanning electron microscope (SEM). The r...Nanocrystalline rare earth mixed oxides SmFe_(1-x)Co_xO_(3-delta) wereprepared by sol-gel method at 1 073 K for 2 h calcination and characterized by X-ray diffraction(XRD) and scanning electron microscope (SEM). The results show that SmFe_(1-x)Co_xO_(3-delta) hasthe structure of perovskite type. The conductivity of the materials increases with the temperaturerising and the maximum conductivity at 1 073 K is 2.6 S/cm with the best mole ratio of Fe^(3+) toCo^(3+) being 1: 4. This kind of oxide is a conductive ceramic material by means of conduction ofelectron and oxygen anion.展开更多
文摘Nanocrystalline rare earth mixed oxides SmFe_(1-x)Co_xO_(3-delta) wereprepared by sol-gel method at 1 073 K for 2 h calcination and characterized by X-ray diffraction(XRD) and scanning electron microscope (SEM). The results show that SmFe_(1-x)Co_xO_(3-delta) hasthe structure of perovskite type. The conductivity of the materials increases with the temperaturerising and the maximum conductivity at 1 073 K is 2.6 S/cm with the best mole ratio of Fe^(3+) toCo^(3+) being 1: 4. This kind of oxide is a conductive ceramic material by means of conduction ofelectron and oxygen anion.
