Superconductivity of Alkali Metal Intercalated Niobate with a Layered Perovskite Structure

Abstract

Abstract Alkali metal intercalated compounds of a layer structured perovskite, KCa2Nb3O10, have been prepared by the reaction with n-butyllithium or alkali metal azides, AN3 (A = Li and Na). The magnetic susceptibility measurements showed that the compounds became superconductors with transition temperatures ranging from 3 - 6 K.