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Compounds in the pyrochlore systemHo2(ZryTi1−y)2O7 exhibit an order-disorder transition from pyrochlore to a defect-fluorite type structure. Compositions in this system were prepared via mechanical milling, followed by a two-step sintering process. Structural characterization was carried out via Rietveld refinements using neutron powder diffraction data, supported by X-ray diffraction to determine...
Nanolaminate (nanomultilayer) thin films of TiO 2 and Ho 2 O 3 were grown on Si(001) substrates by atomic layer deposition at 300°C from alkoxide and β-diketonate based metal precursors and ozone. Individual layer thicknesses were 2nm for TiO 2 and 4.5nm for Ho 2 O 3 . As-deposited films were smooth and X-ray amorphous. After annealing at 800°C and higher...
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