Beiträge zum chemischen Transport oxidischer Metallverbindungen. IV. Der Transport der Spinelle Me3O4(Me = Fe,Co, Mn) und der Ferrite MeFe2O4 (Me = Ni,Co, Mn,Mg) über ihre Metallchloride

The transport effect by means of HCl in the case of spinels Me₃O₄ and ferrites MeFe₂O₄ (equations see “Inhaltsübersicht”) between T₂ = 1000°C and T₁ = 800°C was experimentally investigated under so-called “standard conditions”. Transported crystals and residues were characterized by chemical analysis and the magnetic moment. For nickel ferrite, the effect of transport was calculated by the model of diffusion in dependence on total pressure and compared with experimental values. In the case of nickel and magnesium ferrite, transport starting from the basic oxides was also achieved. By measurements of the line width of ferromagnetic resonance the quality of the transported crystals of the last two ferrites has been checked.