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X-ray diffraction Rietveld refinement calculated parameters Rf and χ2, phase sizes, and percentages. Au@NiFe2O4: gold-decorated nanoparticles; NiFe2O4/Au: core/shell nanoparticles.
| Nanoparticles | Intensity Percentages | Phase Size (nm) Lattice Constant (Å) |
Quality Parameters NiFe2O4|Au |
|||
|---|---|---|---|---|---|---|
| NiFe2O4 | Au | NiFe2O4 | Au | Rf | χ2 | |
| Au@NiFe2O4 | 89.1 | 10.9 | 11.5 8.331 |
22.7 4.071 |
5.16|3.81 | 1.43 |
| NiFe2O4/Au | 70.1 | 29.9 | 11.5 (*) 8.331 (*) |
59.6 4.075 |
5.05|1.36 | 1.42 |
(*) fixed value.
