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电荷有序现象在混价过渡金属氧化物中早有研究, 钙钛矿锰氧化物中由于电荷有序与自旋有序、轨道有序、晶格畸变等相互关联而特别引人注目. 本文综述了有关电荷有序现象的早期
研究与近期进展, 重点介绍了电荷有序转变附近的一些物理异常现象与影响电荷有序态稳定的有关因素.

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.

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