Structural Features of ZrO2-Y2O3 and ZrO2-Gd2O3 Nanoparticles Formed under Hydrothermal Conditions

摘要

We synthesized nanoparticles of variable composition based on zirconium dioxide in the ZrO2-Y2O3 (or Gd2O3)-H2O systems under hydrothermal conditions. By X-ray diffraction and small-angle X-ray scattering studies revealed that the nanoparticles consist of crystalline core and amorphous shell. Increase of Y2O3 (or Gd2O3) content yields increases of shell size and decreases of core size. The effect is due to suppressed ZrO2 crystallites growth caused by development of the shell preventing zirconium ions transport.