Magnetic and Transport Properties of Bi_(0.5)Ca_(0.5–x)La_xFe_(0.3)Mn_(0.7)O_3(x=0, 0.05, 0.10, 0.15, 0.20, 0.25) Prepared by Molten Salt Method  

作　　者：DONG Zhong-ping HU Bin CHEN Yan YUAN Hong-ming FENG Shou-hua 

机构地区：[1]State Key Laboratory of Inorganic Synthesis ＆ Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China

出　　处：《Chemical Research in Chinese Universities》2011年第1期15-18,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(Nos90922034, 20771042)

摘　　要：Polycrystallines Bi0.5Ca0.5-xLaxFe0.3Mn0.7O3（x=0, 0,05, 0.10, 0.15, 0.20, 0.25） were prepared by molten salt method and showed perovskite orthorhombic structure with space group Pnma. The magnetic measurements indicate that the compounds exhibit antiferromagnetic behavior in a temperature range of 4-300 K. The measurements of transport properties suggest that the substitution of La for Ca enhanced the conductivity, and a kink appeared on the curve of temperature dependence of resistivity at 275 K, which is related to the spin-reorientation in the samples.Polycrystallines Bi0.5Ca0.5-xLaxFe0.3Mn0.7O3（x=0, 0,05, 0.10, 0.15, 0.20, 0.25） were prepared by molten salt method and showed perovskite orthorhombic structure with space group Pnma. The magnetic measurements indicate that the compounds exhibit antiferromagnetic behavior in a temperature range of 4-300 K. The measurements of transport properties suggest that the substitution of La for Ca enhanced the conductivity, and a kink appeared on the curve of temperature dependence of resistivity at 275 K, which is related to the spin-reorientation in the samples.

关 键 词：PEROVSKITE DOPING MAGNETISM SPIN-REORIENTATION 

分 类 号：O782.4[理学—晶体学] TM262[一般工业技术—材料科学与工程]