Hexagonal and Orthorhombic Perovskite Phases of ErMnO_3 and TmMnO_3 from Hydrothermal Systems

作     者：ZHU Lin-lin CHEN Yan HUANG Ke-ke ZHANG Gang-hua HU Wei-wei YUAN Hong-ming CHANG Hai-bo FENG Shou-hua 

作者机构：State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 P. R. China Resource and Environment Department Jilin Agriculture University Changchun 130118 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5期

页      面：707-711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 and 20771042) 

主　　题：Manganate RMnO3 Antiferromagnetism Hydrothermal synthesis 

摘      要：The powder crystals of RMnO3（R=Er, Tm） with hexagonal and orthorhombic structures were prepared under hydrothermal conditions. The different structural phases of the title compounds were controllably formed from different kinds of precursors at different reaction temperatures. All of the samples were characterized by powder X-ray diffraction, scanning electron microscopy, inductively coupled plasma analysis, and variable temperature magnetic susceptibility. Their structures were refined by Rietveld method from powder X-ray diffraction data. The measurement of magnetic behavior shows antiferromagnetic orderings at Neel temperatures around 80 and 40 K for the hexagonal and orthorhombic phases, respectively.