Table 3.
The critical size of transform to superparamagnetic state for some common magnetic materials.
| Magnetic material | Fe3O4 | CoFe2O3 | NiFe2O3 | MnFe2O3 |
|---|---|---|---|---|
| D SP (nm) | 23 | 15 | 27 | 25 |
D SP: critical size of transfer to superparamagnetic state.
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