Table 1 XRD parameters of Fe2O3@SnO2 nanostructures at various calcination temperatures.
Sample | Constituent phases | Structure | Crystallite size W–H (nm) | Strain (W–H) | Crystallite size Rietveld refinement (nm) | Strain (Rietveld refinement) | Goodness of fit | Phase percentage (%) |
|---|---|---|---|---|---|---|---|---|
Fe2O3@SnO2–450 | Hematite: 33–0664 | Rhombohedral | 42.4 | 990 × 10–5 | 27.28 | 175 × 10–5 | 1.58 | 52.6 |
Cassiterite: 41–1445 | Tetragonal | 22.4 | 496 × 10–5 | 13.07 | 130 × 10–5 | 47.4 | ||
Fe2O3@SnO2–600 | Hematite: 33–0664 | Rhombohedral | 57.0 | 802 × 10–5 | 35.98 | 106 × 10–5 | 1.86 | 39.5 |
Cassiterite: 41–1445 | Tetragonal | 25.7 | 529 × 10–5 | 13.83 | 70 × 10–5 | 60.5 |
