Table 8: The magnetic properties on co-doped Zn2+ and La3+ ions Fe3O4 nanopowders doped with different La3+ ion molar ratios synthesized via co-precipitation route under N2 atmosphere at room temperature.
| La3+ ions molar ratios | Magnetic properties | ||||
| Saturation magnetization Ms, (emu/g) | Retentivity Mr, (×10−3 emu/g) | Coercivity Hc, (Oe) | Remanence ratio, ×10−6 Mr/Ms | Magnetic moment per mole μB | |
| 0.00 | 24.789 | 48.224 | 7.946 | 1.945 | 1.708 |
| 0.10 | 16.723 | 21.167 | 8.012 | 1.266 | 1.228 |
| 0.15 | 14.645 | 33.269 | 10.74 | 2.272 | 1.109 |
| 0.20 | 15.630 | 22.790 | 4.206 | 1.458093 | 1.219 |
| 0.25 | 16.167 | 688.88 | 67.032 | 42.610255 | 1.298 |
| 0.30 | 3.623 | 72.241 | 112.260 | 19.938452 | 0.299 |