Discovery at the Interface between Known Structure Types: The Layered Y₁₀Ni_xCu_1-xTi₄O₂₄ Family.

Authors

Nataliya L Gulay, Hai Lin, Batoul Almoussawi, Cara J Hawkins, Manel Sonni, Marco Zanella, Troy D Manning, Luke M Daniels, Matthew S Dyer, John B Claridge, Matthew J Rosseinsky

Published in

Inorganic chemistry. Jul 12, 2026. Epub Jul 12, 2026.

Abstract

During the exploration of the interface between the known structures of perovskite Y₂NiTiO₆ and hexagonal layered Y₂CuTiO₆, we have discovered the new phase Y₁₀Ni_xCu_1-xTi₄O₂₄ (x = 0, 0.5, 1). The structure of Y₁₀CuTi₄O₂₄ was solved by means of single-crystal X-ray diffraction, which revealed a layered monoclinic structure, with the space group C2/m, a = 12.2405(1), b = 5.8643(1), c = 7.1729(1) Å, β = 107.083(1)°. The structures of three Y₁₀Ni_xCu_1-xTi₄O₂₄ (x = 0, 0.5, 1) phases were also refined based on high-resolution powder X-ray diffraction data. Substitution of Cu for Ni causes only minor changes in lattice and atomic parameters. The new phase is related to known Y₅Mo₂O₁₂-type structures with an extra atomic position occupied by Ni/Cu in the structure of Y₁₀Ni_xCu_1-xTi₄O₂₄ (x = 0, 0.5, 1). The high-resolution powder X-ray diffraction data revealed peak broadening for the reflections with l = 2n + 1 corresponding to stacking faults originating from the layered structure of Y₁₀Ni_xCu_1-xTi₄O₂₄. Y₁₀Ni_xCu_1-xTi₄O₂₄ (x = 0, 0.5, 1) were characterized with respect to their magnetic and optical properties.

PMID:
42437523
Bibliographic data and abstract were imported from PubMed on 13 Jul 2026.

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