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- W1978621730 abstract "The oxidation-reduction mechanism in Mn-Zn ferrites MnxZnyFe2.044O4 with O <x+y <1, prepared by a standard ceramic route was investigated in the temperature range 3OO–7OO°C. X-ray diffraction analysis and thermogravimetry measurements have enabled us to state iron and manganese ions distribution in the spinel lattice which is given by the formula: (Mn0.8x2+Zn2+yFe3+1−0.8x−y)A(Fe3+1+0.6x+yFe2+1−0.8x−yMn3+0.2y)BO2−4 Below about 45O°C, these ferrites are oxidized in cation deficient spinels but the oxidation depends highly on oxygen pressure. With increasing temperature further oxidation of Mn2+-ions results in the appearance of α-Fe2O3 accompanied by a defect spinel phase due to zinc presence." @default.
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- W1978621730 date "1990-07-01" @default.
- W1978621730 modified "2023-10-18" @default.
- W1978621730 title "Oxidation mechanism of manganese-zinc ferrites in relation with cationic distribution below 700°C" @default.
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- W1978621730 doi "https://doi.org/10.1016/0254-0584(90)90131-s" @default.
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