Abstract
The solid state reaction of ferrite formation was studied under low oxygen partial pressure (10 -3% O 2) by Mössbauer spectroscopy, X-ray diffraction and density measurements. At temperatures below 500°C, a Mn ferrite was formed, whereas the Zn ferrite formation starts later at the same temperature than in air sintering. The appearance of an intermediate Mn ferrite is caused by the low valency state of Mn ions under such strong reducing conditions. The MnZn ferrite formation is completed by 800°C. No direct correlation was found between ferrite formation and densification.
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