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Journal articles
Magnetic anisotropies and cationic distribution in CoFe2O4 nanoparticles prepared by co-precipitation route: Influence of particle size and stoichiometry
Abstract : Magnetic anisotropies and crystallographic structures of iron-cobalt nanospinels obtained with the co-precipitation synthesis process are revealed using X-ray Absorption Spectroscopy and X-ray Magnetic Circular Dichroism. The chemical process allows to obtain nanoparticles of various sizes and chemical composition, but it is the site symmetry environment of Co2+ that is found to be the crucial parameter that governs the magnetic anisotropies of the nanospinels. The distribution of Co2+ among the crystallographic sites of the structure is directly linked to the temperature of the synthesis process. In parallel, the results also revealed that a superficial rich shell of iron is formed for the iron-cobalt nanospinels stable in acidic medium leading to chemically inhomogeneous nanoparticles.
Cited literature [59 references]
https://hal.sorbonne-universite.fr/hal-01787282
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Monday, May 7, 2018 - 2:34:27 PM
Last modification on : Tuesday, March 16, 2021 - 3:34:05 PM
Long-term archiving on: : Tuesday, September 25, 2018 - 12:38:07 AM
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Monday, May 7, 2018 - 2:34:27 PM
Last modification on : Tuesday, March 16, 2021 - 3:34:05 PM
Long-term archiving on: : Tuesday, September 25, 2018 - 12:38:07 AM
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