Hydrothermal Synthesis and Characterization of Double Perovskites RSrMnFeO_6(R=La,Pr,Nd,Sm)

作     者：ZHANG Gang-hua YUAN Hong-ming CHEN Yan LI Wei-juan YANG Mei-qi FENG Shou-hua 

作者机构：State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2010年第26卷第4期

页      面：517-521页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 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）] 

基　　金：Supported by the National Natural Science Foundation of China(Nos.20631010 90922034 and 20771042) 

主　　题：Double perovskites Orthorhombic Hydrothermal synthesis 

摘      要：A series of double perovskites RSrMnFeO6（R=La, Pr, Nd, Sm） was synthesized under mild hydrothermal conditions. Crystal growths of the samples were sensitive to alkalinity, temperature, filling fraction, and composition of initial reaction mixture. The desired series of compounds belongs to the class of AA＇BB＇O6 perovskites with a random distribution of Mn and Fe atoms over the B-cation sub-lattice. Their structures show the distorted orthorhombic symmetry with space group Pnma. The shapes and sizes of the crystals were analyzed on a Rigaku JSM-6700F by scanning electron microscopy. Analysis done by XPS, Mossbauer spectroscopy and iodometric titration reveals that Mn and Fe ions have ＋4 and ＋3 oxidation states, respectively.