Three-dimensional atomic structure of NiO-ZrO2(cubic) interfaces

E. C. Dickey*, V. P. Dravid, P. D. Nellist, D. J. Wallis, S. J. Pennycook

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The three-dimensional atomic structure of low-energy NiO-ZrO2(cubic) interfaces is determined through a combination of electron imaging and spectroscopy techniques. High resolution electron microscopy, and Z-contrast STEM imaging with simultaneous electron energy loss spectroscopy are employed as complementary techniques for elucidating the structural and chemical aspects of the interface and associated interfacial relaxation mechaubic) interface. The planar interfaces show an atomically abrupt transition between the two phases which share a common oxygen plane at the boundary. Structural relaxations accommodating the lattice mismatch indicate that the boundary has relaxed to a low-energy configuration. The resulting interface structure is found to facilitate strong bonding across the boundary as is reflected in the fracture behavior of the composite system.

Original languageEnglish (US)
Pages (from-to)1801-1816
Number of pages16
JournalActa Materialia
Volume46
Issue number5
DOIs
StatePublished - Mar 2 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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