Point defect structure of Mn-doped ferrous oxide

Abstract

The paper presents an analysis of thermogravimetric data obtained in an earlier work in terms of defect thermodynamics, based on mass action law. The data of nonstoichiometry as tested to fit one of the cluster models postulated for ferrous oxide. It has been shown, that the best agreement between theory and experiment is obtained under the assumption that in low Mn-content of ferrous oxide two ranges of nonstoichiometry exist, in which two different defect clusters dominate. More than one cluster may be proposed in the low range of nonstoichiometry. However, only a single ionized Roth's cluster has been proposed in the higher range.