Values of anisotropy factors (A and B), magnetic saturation from LAS fitting (Ms1) high field susceptibility (χp), anisotropy field factor (HA), and magneto-crystalline anisotropy (Keff) along with goodness of the curve fit (R2) calculated from the fitting of M–H data (Fig. 6) for the M-type compositions SrFe12O19 and Sr0.95Gd0.05Fe12−xCuxO19 where x = 0.3 and 0.6.
| Sample | A (×103) | B (×106) | χ p (×10−5) | M s1 | H A (kOe) | K eff (erg cc−1) | R 2 |
|---|---|---|---|---|---|---|---|
| SFO | 3.2 ± 0.1 | 7.2 ± 0.1 | 8.4 | 30.7 ± 0.3 | 10.4 | 0.7 × 104 | 0.999 |
| SGFCO-1 | 3.2 ± 0.1 | 7.2 ± 0.2 | 5.7 | 60.8 ± 0.6 | 10.4 | 1.3 × 104 | 0.999 |
| SGFCO-2 | 3.1 ± 0.1 | 6.6 ± 0.2 | 5.7 | 76.2 ± 0.7 | 9.9 | 1.6 × 104 | 0.998 |