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Deviation from stoichiometry and point defects in (ZnxMn1− xFe2)1− δ/3O4

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
159
Identifiers
DOI: 10.1016/s0167-2738(03)00030-4
Keywords
  • Ferrites
  • Point Defects
  • Non-Stoichiometry
Disciplines
  • Earth Science
  • Physics

Abstract

Abstract The deviation from stoichiometry, δ, in (Zn x Mn 1− x Fe 2) 1− δ/3 O 4 was measured thermogravimetrically at 1200 °C as a function of oxygen activity, a O 2 , and cationic composition, x. Point defect thermodynamic modeling of the oxygen activity dependence of δ suggests that cation vacancies are the majority ionic defects at high oxygen activity and cation interstitials dominate at lower activities.

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