Oxygen ion displacement in compositionally homogeneous, nanocrystalline ZrO 2–12 mol% Y 2O 3 powders

The crystal structure of compositionally homogeneous, nanocrystalline ZrO 2–12 mol% Y 2O 3 powders was studied by X-ray diffraction. By applying the Rietveld method, it was found that these powders present a tetragonal phase with an axial ratio of unity, but with the oxygen ions displaced from their...

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Bibliographic Details
Published inMaterials letters Vol. 41; no. 4; pp. 204 - 208
Main Authors Lamas, D.G, Walsöe de Reca, N.E
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1999
Subjects
Nanocrystalline powders
Oxygen displacement
Rietveld analysis
X-ray diffraction
Zirconia–yttria
61.46.+w
61.10.Nz
Nanocrystalline powders
X-ray diffraction
Zirconia–yttria
Oxygen displacement
Rietveld analysis
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Summary:The crystal structure of compositionally homogeneous, nanocrystalline ZrO 2–12 mol% Y 2O 3 powders was studied by X-ray diffraction. By applying the Rietveld method, it was found that these powders present a tetragonal phase with an axial ratio of unity, but with the oxygen ions displaced from their ideal fluorite positions along the c-axis (t″-form of the tetragonal phase). The influence of the crystallite size on the oxygen ion displacement was also studied.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(99)00131-7