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Topotactic Reduction and Reoxidation of Hexagonal RCu0.5Ti0.5O3 (R =Y, Eu-Lu) Phases Public Deposited

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  • Hexagonal AMO₂ and AMO₃ phases have the same basic structure, and intermediate compositions for this structure have been prepared by topotactic oxidation of AMO₂ phases such as RCuO₂, where R is a trivalent rare earth cation. We now find that such intermediate phases can also be prepared by topotactic reduction of hexagonal RCu₀.₅Ti₀.₅O₃ (R = Y, Tb-Lu) phases. Our TGA and magnetic susceptibility studies indicate a formula of RCu₀.₅Ti₀.₅O₂.₇₈ for these reduced phases. Topotactic reoxidation occurs on heating these phases to 400°C in air.
  • Keywords: Magnetic properties, Inorganic compounds, Crystal structure, Electronic properties, Chemical synthesis
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  • Jiang, P., Berthelot, R., Li, J., Sleight, A. W., & Subramanian, M. A. (2013). Topotactic reduction and reoxidation of hexagonal RCu₀.₅Ti₀.₅O₃ (R = Y, eu-lu) phases. Materials Research Bulletin, 48(6), 2237-2239. doi:10.1016/j.materresbull.2013.02.058
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  • 48
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  • 6
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  • The work is supported by a grant from National Science Foundation (DMR 0804167).
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