Figure 6From: Synthesis, characterization, and magnetic properties of monodisperse CeO2 nanospheres prepared by PVP-assisted hydrothermal methodRoom temperature optical absorbance spectra of CeO 2 nanospheres and plot of (α h v)2. (a) Room temperature optical absorbance spectra of CeO2 nanospheres using Ce(NO3)3·6H2O as starting materials. (b) Plot of (α hv)2 as a function of photon energy for the CeO2 nanospheres.Back to article page