Abstract
Integrated X-ray intensities of Bragg peaks were observed from single crystals of Zr0.866Ca0.134Ol.866 and Zr0.786Y0.214O1.893 in the disordered state. There are displacements of oxygen ions (characterized by Δ/a ~ 0.05) from the ideal positions of the fluorite structure along (100) directions similar to those that occur on ordering below 1273 K and related to the cubic to tetragonal transition in pure ZrO2. These displacements are not related to anharmonicity, at least to fourth-order terms. In addition, there are small displacements of the cations (Δ/a ~ 0.015) in (111) directions in the yttria-stabilized zirconia.
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Schedule a callMore From: Acta crystallographica. Section A, Crystal physics, diffraction, theoretical and general crystallography
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