Table 2: Net weight loss illustration.

Sample Formula Start, end point (%) Net weight loss (%) M1 0.1 Mg0.1Fe0.9O 100–98.12 1.87 M2 0.1 Mg0.1Fe0.9O 100–97.55 2.44 M3 0.2 Mg0.2Fe0.8O 100–99.83 0.16 M4 0.2 Mg0.2Fe0.8O 100–99.86 0.13 M5 0.4 Mg0.4Fe0.6O 100–99.78 0.21 M6 0.4 Mg0.4Fe0.6O 100–95.62 4.37