This review shows the great impact of charge ordering upon the magnetic and transport properties of mixed valent Co4+/Co3+ and Co3+/Co2+ cobalt oxides. The relationships between charge ordering and physical properties are described for three structural families: the ordered oxygen deficient perovskites and the Ruddlesden and Popper (RP) derivative La1.5Sr0.5CoO4, the layered NaxCoO2 series and the “114” CaBaCo4O7 oxide.
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Raveau et al. (2015) studied this question.
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