Oxide Ion Disorder in Nd2Hf2O7

Rick Ubic, Isaac Abrahams, Yi Hu

Research output: Contribution to journalArticlepeer-review

Abstract

The compound Nd 2 Hf 2 O 7 was synthesized via a solid-state route and the crystal structure determined by electron diffraction and Rietveld refinement of both X-ray and neutron diffraction data. A small amount of disorder was found on the anion sublattice, while no evidence of disorder in the cation sublattice could be verified. The compound is cubic with space group Fd 3 m , structurally lying between the ideal pyrochlore and fluorite forms, with 0.26% of the oxide ions residing on the 8 a sites usually vacant in pyrochlores. The lattice constant is 10.6469(2) Å, and the overall fit parameter was R wp =0.0398.

Original languageAmerican English
JournalMaterials Science and Engineering Faculty Publications and Presentations
StatePublished - 1 Jan 2008

EGS Disciplines

  • Materials Science and Engineering

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