Full-width half-maximum of (111) peaks from ∼8% Eu–CeO2 nanomaterials, with associated crystalline domain sizes as determined by the Scherrer equation.
| Sample | FWHM (2Θ) | XRD crystalline domain (nm) |
|---|---|---|
| Nanowires | 0.5 | 17 |
| Nanocubes | 0.38 | 22 |
| Nanorods | 1.44 | 6 |
| Annealed nanorods | 0.58 | 16 |