Abstract
Ternary oxides containing d 1 ions might be interesting candidates for high temperature superconductivity. At least, they present noticeable analogies with the new cuprates superconductors, in term for instance of electronic structure. We report here investigations on perovskite-type doped systems, and searches of K 2NiF 4-type phases containing Ti 3+. We have found no occurrence of superconductivity in the compounds studied. Although nothing, in ionic sizes or chemical properties, seems opposed to their existence, Ti 3+ phases with K 2NiF 4 − type structure appear unstable in regard to perovskite-type compounds.
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