| Concentration of NH4OH(aq) used | XRD data of the synthesized La2Hf2O7 NPs | |||
| 2θ (°) | FWHM (β) | Lattice parameters (Å) | Particle size (nm) | |
| [0.75%] | 28.57 | 0.4 | 10.81 | 19.00 |
| [1.5%] | 28.64 | 0.39 | 10.79 | 20.00 |
| [3.0%] | 28.67 | 0.37 | 10.78 | 21.00 |
| [6.0%] | 28.69 | 0.31 | 10.77 | 26.00 |
| [7.5%] | 28.74 | 0.27 | 10.75 | 29.00 |
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