Preparation and conductivity of nanocrystalline rare earth mixed oxides SmFe_(1-x),Co_xO_(3-δ)

作     者：RENYinzhe WANGYuxiang 等 

作者机构：DepartmentofChemstryShanxiNormalUniversityLinfen041004China LinfenNormalCollegeofShanxiNormalUniversityLinfen041004China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2002年第21卷第3期

页      面：190-192页

核心收录：

学科分类：07[理学] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

主　　题：nanocrystalline rare earth SmFe_(1-x)Co_xO_(3-delta) conductivity 

摘      要：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.