3/31/2024 0 Comments Measure distances in crystal maker![]() ![]() Furthermore, the spinel-based monoclinic model is more accurate than the monoclinic nonspinel model. Our work indicates that the traditional cubic spinel model is a more accurate model of γ-Al 2O 3 than the other models considered. The single-crystal SAED spot pattern reflected symmetry consistent with both the cubic spinel and tetragonal nonspinel models, yet, the Al cation distribution better matched the cubic spinel model based on the relative intensities of diffraction spots. The lattice interplanar distances derived from the polycrystalline SAED pattern most closely matched the cubic spinel γ-Al 2O 3 model. Single crystal and textured polycrystalline γ-Al 2O 3 thin films were synthesized by oxidation of NiAl(110) in air at 850 ☌ for 1 and 2 hours, respectively, and used to evaluate the accuracy of two spinel-based and two nonspinel models by comparison of selected-area electron diffraction (SAED). ![]()
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