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Defect spinel structure in iron oxide colloids |
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| Authors: | E. Tronc J.P. Jolivet R. Massart |
| Affiliation: | 1. Chimie Appliquée de l''Etat Solide, LA 302, ENSCP, 11 rue P. et M. Curie 75231 Paris Cédex 05 France;2. Polymères Inorganiques, Université P. et M. Curie, 4 Place Jussieu 75230 Paris Cédex 05, France;3. Physico-Chimie Inorganique, ERA 608, Université P. et M. Curie, 4 Place Jussieu, 75230 Paris Cédex 05, France |
| Abstract: | A structural quantitative study has been performed on iron-oxide colloids with the spinel structure prepared by a chemical way. Cation vacancies are found to occupy both octahedrally (16d) and tetrahedrally (8a) coordinated sites. Significant electron density at equipoint position(48f) is assigned to interstitial iron ions in a second tetrahedrally coordinated position. |
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