title: Magnetite Oxidation: A Proposed Mechanism.
abstract: All magnetites are oxidized topotactically with formation of solid solution at temperatures below 400 degrees C. The oxidation of hematite-free magnetites proceeds to gammaFe(2)O(3), whereas in the presence of hematite epitaxial growth of alphaFe(2)O(3) takes place, with excess iron ions being returned to the solid solution. A method for synthesizing maghemite from natural magnetites is indicated.
authors.forename: U
authors.initials: U
authors.lastname: Colombo
authors.forename: F
authors.initials: F
authors.lastname: Gazzarrini
authors.forename: G
authors.initials: G
authors.lastname: Lanzavecchia
authors.forename: G
authors.initials: G
authors.lastname: Sironi