Table 1.
Magnetic hysteresis parameters at 4 and 300 K for all four types of MNPs.
| Sample | Ms (emu/g) | Hc (kA/m) | ||
|---|---|---|---|---|
| 4 K | 300 K | 4 K | 300 K | |
| Fe3O4 | 90.6 | 80.7 | 32 | 10 |
| Fe3O4-SiO2-1 | 83.5 | 73.3 | 28 | 18 |
| Fe3O4-SiO2-2 | 77.1 | 67.5 | 26 | 16 |
| Fe3O4-SiO2-3 | 63.5 | 53.9 | 30 | 12 |
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