Studies of Superconducting Oxides with the Sodium Chloride Structure

1 Studies of Superconducting Oxides with the Sodium Chloride Structure 

TABLE 7 Table of Superconducting NaCl-type Oxides. 

It should be mentioned that, of the other first-row transition metal oxides crystallizing with the NaCl structure, none has been found to superconduct down to 2.5 K. Some of these oxides undergo magnetic ordering at low temperature and most behave as semiconductors at all temperatures. These would include MnO, FeO, CoO, and NiO. Studies performed on CuO, which has a different crystalline structure, showed only semiconducting behavior to very low temperatures (1.9 K). 

Historical Introduction and Crystal Chemistry of Oxide Superconductors 35 

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