Table 1

Summary of crystallite sizes, lattice constant, bandgap, and magnetization of pure CeO2nanospheres
Sample Crystallite size from XRD (nm) Lattice constanta(nm) Eg(eV) Crystallite size from Raman spectroscopy (nm) Msat 10 kOe (emu/g)
Before Ar annealing After Ar annealing
CeO2 at 160 °C for 12 h 9.43 ± 0.41 0.5430 ± 0.0021 3.00 7.39 - -
CeO2 at 200 °C for 12 h 19.6 ± 0.53 0.5420 ± 0.0003 3.04 8.21 0.0026 0.011
CeO2 at 160 °C for 24 h 12.2 ± 0.13 0.5430 ± 0.0003 3.06 9.23 0.0053 0.0026
CeO2 at 200 °C for 24 h 15.6 ± 0.20 0.5428 ± 0.0006 3.10 12.28 0.016 0.015

Eg, bandgap energy; Ms, saturation magnetization. Data of magnetization of pure CeO2 nanospheres is before and after Ar annealing.

Phokha et al.

Phokha et al. Nanoscale Research Letters 2012 7:425   doi:10.1186/1556-276X-7-425

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