Journal of Inorganic Materials

• Research Paper •     Next Articles

Charge Ordering in the Perovskite Manganites

CHEN Chun-Xia1,2   

  1. 1. Structural Research Laboratory, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; 2. Department of Physics, Anqing
    Teacher College, Anqing 246011, China
  • Received:2003-12-16 Revised:2004-02-16 Published:2005-01-20 Online:2005-01-20

Abstract: Charge ordering is a phenomenon generally observed in mixed-valent transition metal oxides. The perovskite manganites are especially interesting because long-range ordering of the Mn3+ and
Mn4+ ions in these materials is linked to antiferromagnetic spin ordering, the long-range ordering of the Mn3+ orbital and the associated lattice distortions. The early experiments and the progress
of current state of charge ordering were overviewed in this article. The abnormal change of the resistivity, magnetization, lattice parameter and ultrasonic velocity and attenuation around the charge ordering
transition with the effects of cation size, chemical substitution, pressure, and magnetic field on the charge ordering were also discussed.

Key words: manganites, charge ordering

CLC Number: