Table 3: Magnetic properties of A-I, A-II and A-III compositions calcineds at 1100 ℃/3h.
| Ferrite | MS (Am2/kg) | MR (Am2/kg) | HC (T), Er. Max: ±6 × 10-4 |
| A-I | 86.05 ± 5.02 | 14.51 ± 1.61 | 0.008 |
| A-II | 48.26 ± 3.27 | 7.47 ± 1.27 | 0.008 |
| A-III | 30.75 ± 3.01 | 9.82 ± 2.11 | 0.02 |