Abstract: | Contributions to the Chemical Transport of Metal Oxides. V. Transport of Ternary and Quaternary Mixed Ferrites by their Chlorides The transport by means of HCl as transporting gas in a closed system in the case of the ternary mixed ferrites (Ni0,8Fe2,2O4, Mn0,75Fe2,25O4, Mn1,286Fe1,714O4) and the quaternary mixed ferrites (Mg0,5Mn0,5Fe2O4, Mg0,75Mn0,536Fe1,714O4, Mg0,281Mn0,469Fe2,25O4, Mn0,5Zn0,5Fe2O4, Mn0,5Zn0,45Fe2,05O4, Ni0,5Zn0,5Fe2O4) between T2 = 1100?1000°C and T1 = 1000?800°C was investigated. Transported crystals were characterized by chemical analysis and the saturation magnetization, the transport rate has been checked. In the case of Mn0,5Zn0,45Fe2,05O4 two phases were transported. By discussing the phase diagram an explanation is given. |