Table 1: Physical and magnetic properties of as synthesized Fe3O4 nanospheres prepared with different hydrolyzing agents.
| Mean particle size (nm) | Crystallite size (nm) | BET surface area (m2/g) | Magnetization (emu/g) | Coercivity (Oe) | |
| Fe3O4-urea | 172 ± 16 | 33.99 | 17.08 | 82.89 | 160 |
| Fe3O4-ABC | 206 ± 14 | 35.50 | 23.08 | 85.04 | 150 |
| Fe3O4-DDA | 322 ± 27 | 36.33 | 53.04 | 84.67 | 154 |
| Fe3O4-CNS | 157 ± 13 | 24.85 | 67.59 | 60.55 | 64 |