Table 1.

Weight percentages (wt%) of the crystalline phases present in each of the samples, obtained through Rietveld refinement.

HT Temperature (°C)	Crystalline Phase and Composition (wt%)	R Expected (Rexp)	Weighted R Profile (Rwp)	Goodness-of-Fit (GF)
500	${\mathrm{C}\mathrm{o}}_3{\mathrm{O}}_4$ (22.7) γ-${\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_3$(77.3)	1.82	2.84	1.56
700	${\mathrm{C}\mathrm{o}}_3{\mathrm{O}}_4$ (63.8) α-${\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_3$ (23.6) $\mathrm{C}\mathrm{o}{\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_4$ (7.6)	1.69	6.13	3.63
900	$\mathrm{C}\mathrm{o}{\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_4$ (94.7) α-${\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_3$ (5.3)	1.68	3.82	2.27
1000	$\mathrm{C}\mathrm{o}{\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_4$ (97.6) α-${\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_3$ (2.4)	1.66	3.64	2.18
1100	$\mathrm{C}\mathrm{o}{\mathrm{F}\mathrm{e}}_2{\mathrm{O}}_4$ (100)	1.77	2.93	1.65