A correlation between the change of the chemical potential of ionic and electronic defects and the phase stability range as exemplified by solid solutions of manganese in iron oxide (Fe1-xMnx)(1-y)O

The change of the chemical potential of ionic and electronic defects in the phase stability range of a compound has been discussed followed by the cor relation of the above parameters with the properties of the phase. A method for the estimation of the maximum change in the Fermi level in the phase s tability range has been suggested employing the dependence of the electrica l conductivity or the deviation from stoichiometry on the oxidant pressure, or at least, the values of exponents in the function describing the above relation. The analysis of the changes of the chemical potentials of ionic a nd electronic defects in the oxide phase stability ranges and the correlati on with the changes of their properties has been performed for pure and dop ed with manganese iron oxide. (C) 1999 Published by Elsevier Science B.V. A ll rights reserved.