Thermogravimetric Investigation of Fe2+ in Ferrites Containing Excess Iron
- 1 March 1965
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 36 (3) , 1022-1024
- https://doi.org/10.1063/1.1714082
Abstract
The weight changes occuring in manganese‐zinc ferrites containing 2–15 wt % ferrous iron have been followed by TGA up to 1420°C. Those changes which result from the valency change Fe3+→Fe2+ have been more closely studied as a function of temperature between 1100° and 1350°C and of atmosphere for oxygen contents between 0.025% and 21%. From the equilibrium partial pressures of oxygen over MnZn ferrites having ferrous contents up to 10 wt %, a composition‐temperature‐atmosphere diagram has been constructed. Ferrites containing more than 10 wt % of Fe2+ showed marked deviations from this diagram.This publication has 7 references indexed in Scilit:
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