Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (5): 707-711.

• Articles • Previous Articles     Next Articles

Hexagonal and Orthorhombic Perovskite Phases of ErMnO3 and TmMnO3 from Hydrothermal Systems

ZHU Lin-lin1, CHEN Yan1, HUANG Ke-ke1, ZHANG Gang-hua1, HU Wei-wei1, YUAN Hong-ming1, CHANG Hai-bo1,2 and FENG Shou-hua1*   

  1. 1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. Resource and Environment Department, Jilin Agriculture University, Changchun 130118, P. R. China
  • Received:2009-07-23 Revised:2009-09-30 Online:2010-09-25 Published:2010-11-26
  • Contact: FENG Shou-hua. E-mail: shfeng@jlu.edu.cn
  • Supported by:

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

Abstract: 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.

Key words: Manganate, RMnO3, Antiferromagnetism, Hydrothermal synthesis