2. Ferrite synthesis

Ferrites are synthetic mixed oxides developed at high temperatures from the primary oxides of transition metals. For example, nickel ferrite NiFe ₂ O ₄ is synthesized from iron and nickel oxides, NiO and Fe ₂ O ₃ respectively. Their synthesis leads either to polycrystalline materials, which today represent the best-selling magnetic ceramics, or to single crystals of lesser industrial importance.