Crystal structure and short-range oxygen defects in La- and Nd-modified ZrO{sub 2}
Conference
·
OSTI ID:10184622
- Argonne National Lab., IL (United States)
- Nagoya Inst. of Tech. (Japan)
- Toyota Central Research and Development Labs., Inc., Nagoya (Japan)
The crystal structure of rare-earth modified zirconia and the associated oxygen defects were studied by neutron diffraction. A Rietveld analysis of the neutron powder patterns of heat treated samples of La- and Nd- 10mol%-ZrO{sub 2} revealed the composition of a major tetragonal phase (space group P4{sub 2}/nmc) and a minor cubic phase (space group Fm3m). The sort-range oxygen defects structure was examined by a Fourier-filtering technique. A real-space correlation function, obtained from a Fourier transform of the filtered residual diffuse scattering, showed evidence of static, oxygen-vacancy induced atomic displacements along the <111> and other directions of the pseudocubic cell.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10184622
- Report Number(s):
- ANL/IPNS/CP--79265; CONF-9309142--3; ON: DE93040229
- Country of Publication:
- United States
- Language:
- English
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