The synthesis and structure of Tl(Sr_1.4La_2.6)Ni₂O₉; a direct structural analogue of a superconducting cuprate

Abstract

The nickelate Tl(Sr_1.4La_2.6)Ni₂O₉, synthesised by the reaction of Tl₂O₃, La₂O₃ and Sr₂Ni₂O₅, is isostructural with the equivalent superconducting cuprate phase, consisting of layers of apex-sharing, stoichiometric NiO₆ octahedra separated by a TlO layer.

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