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Delayed crystallization of ultrathin Gd2O3 layers on Si(111) observed by in situ X-ray diffraction
2012, Hanke, Michael, Kaganer, Vladimir M., Bierwagen, Oliver, Niehle, Michael, Trampert, Achim
We studied the early stages of Gd2O3 epitaxy on Si(111) in real time by synchrotron-based, high-resolution X-ray diffraction and by reflection high-energy electron diffraction. A comparison between model calculations and the measured X-ray scattering, and the change of reflection high-energy electron diffraction patterns both indicate that the growth begins without forming a three-dimensional crystalline film. The cubic bixbyite structure of Gd2O3 appears only after a few monolayers of deposition.