| Samples | Lattice constanta (/nm) | Cell volume (nm3) | Average grainsize (nm) | d111 (nm) | d200 (nm) | d220 (nm) | 
| Theoretical value (CeO2) (PDF#34-0394) | 0.5411 | 0.1584 | - | 0.3123 | 0.2706 | 0.1913 | 
| 0% La-CeO2 | 0.5416 | 0.1589 | 92 | 0.3142 | 0.2721 | 0.1923 | 
| 20% La-CeO2 | 0.5459 | 0.1627 | 80 | 0.3145 | 0.2724 | 0.1926 | 
| 50% La-CeO2 | 0.5633 | 0.1783 | 67 | 0.3219 | 0.2789 | 0.1971 | 
| 80% La-CeO2 | 0.5701 | 0.1862 | 51 | 0.3357 | 0.2901 | 0.2056 |