Abstract
The metal-insulator transition in 3d transition metal oxides such as the ternary perovskite oxides as well as the binary oxides both as a function of composition and temperature are reviewed. The description of metallisation in terms of a change in sign of the temperature coefficient of resistance as well as conductivity at 0 K are considered in terms of modern theories based on localisation. It is pointed out that there may be grounds to believe that in the high temperature limit a resistivity less than ≈10−1 ohm cm may be associated with metallic properties despite a negative temperature coefficient of resistance. The correlation between magnetic and electrical properties have also been examined.
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Contribution No. 353 from the Solid State and Structural Chemistry Unit.
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Ganguly, P. On some aspects of metallisation with special reference to iron group transition metal oxides. Proc. Indian Acad. Sci. (Chem. Sci.) 96, 523–532 (1986). https://doi.org/10.1007/BF02936303
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DOI: https://doi.org/10.1007/BF02936303