Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (4): 517-521.

• Articles • Previous Articles     Next Articles

Hydrothermal Synthesis and Characterization of Double Perovskites RSrMnFeO6(R=La, Pr, Nd, Sm)

ZHANG Gang-hua, YUAN Hong-ming, CHEN Yan, LI Wei-juan, YANG Mei-qi and FENG Shou-hua*   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2009-05-20 Revised:2009-09-15 Online:2010-07-25 Published:2010-10-01
  • Contact: FENG Shou-hua. E-mail: shfeng@mail.jlu.edu.cn
  • Supported by:

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

Abstract: 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, M?ssbauer spectroscopy and iodometric titration reveals that Mn and Fe ions have +4 and +3 oxidation states, respectively.

Key words: Double perovskites, Orthorhombic, Hydrothermal synthesis