Magnetic material Manganese-zinc ferrites (MnZn+Fe2O4)
| Chemical designation | Manganese-zinc ferrites (MnZn+Fe2O4) |
|---|---|
| State | Magnetic material |
| Etching | unetched |
Soft magnetic ferrites are sintered as ferrite cores (“iron cores”) and used e.g. in transformers or coils.
Since they are hardly electrically conductive and therefore almost no eddy current losses occur, they are also suitable for high switching frequencies (up to several megahertz).
The preferred materials for soft magnetic ferrite cores are:
- Manganese-zinc ferrites (MnZn) in the composition MnaZn(1-a)Fe2O4
- Nickel-zinc ferrites (NiZn) in the composition NiaZn(1-a)Fe2O4.
The chemical composition of the fracture surface (EDX analysis, data in wt.%) consists of:
- Fe 52 % (33 at.%)
- O 24 % (52.5 at.%)
- Mn 17 %
- Zn 7 %
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