2. Ferrite synthesis
Ferrites are synthetic mixed oxides developed at high temperatures from the primary oxides of transition metals. For example, nickel ferrite NiFe2O4 is synthesized from iron and nickel oxides, NiO and Fe2O3 respectively. Their synthesis leads either to polycrystalline materials, which today represent the best-selling magnetic ceramics, or to single crystals of lesser industrial importance.
2.1 Single-crystal ferrites
Single-crystal ferrites are synthesized by a variety of methods: hydrothermal synthesis, growth in molten oxide media and pulling synthesis. The latter is used for industrial single crystals. The advantage of this type of product is a very dense material with a very good surface quality (polishing is nevertheless necessary). The disadvantages...
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Ferrite synthesis
Which ferrite for which application?
Bibliography
- GUYOT (M.), CAGAN (V.) - Temperature dependence of the domain wall mobility in YIG, deduced from the frequency spectra of the initial susceptibility of polycrystals - . JMMM 27, 1982, pp. 202-208.
- MORINEAU (R.), PAULUS (M.) - Chart of pO2 versus temperature and oxidization degree for Mn-Zn ferrites - ....
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