Open AccessTHE OXIDIZING PROCESS OF Fe3O4 ULTRAFINE PARTICLES
Author(s) -
Yong Du,
Yuchang Zhang,
Huanjun Lu
Publication year - 1981
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.30.424
Subject(s) - maghemite , oxidizing agent , magnetite , nucleation , materials science , process (computing) , magnetic moment , chemical engineering , condensed matter physics , metallurgy , thermodynamics , chemistry , computer science , physics , organic chemistry , engineering , operating system
The conversion of magnetite to maghemite has been studied by M?ssbauer effect. That is a nucleation and growth process of γ-Fe2O3. The change of the concentration of Fe3O4 with time was determined by the change of magnetic moment in the oxidizing process. The chemical reaction formula, -dC/dt = mC3, is only appropriate for the starting stage of the oxidizing process.