Thermodynamic Determination of the Cation Distribution in NixMn1-γ-xFe2+γO4 Ferrites

Authors

Qiangmin Wei, University of Nebraska-LincolnFollow
Brian W. Robertson, University of Nebraska-LincolnFollow

Date of this Version

11-15-2003

Comments

Published in Journal of Solid State Chemistry 176 (2003): 279–283. Copyright 2003, Academic Press/Elsevier. doi: 10.1016/S0022-4596(03)00382-7 Used by permission.

Abstract

The cation distribution in the spinel ferrite system NixMn1-γ-xFe2+γO4 (x = 0, 0.25, 0.5, 0.75 and γ = 0.137) has been calculated analytically in complete form as a function of thermodynamic parameters. A generalized theoretical framework based on the O’Neill–Navrotsky model and Newton methods was used to solve a multicomponent system for up to 10 cation species. The relationship between the cation distribution and composition is given. The results are shown to agree with the available experimental results.