Increasing the size of Fe3-δO4 Nanoparticles by Performing a Multistep Seed-Mediated Growth Approach
| Autor: | Jean-Marc Greneche, Paula Duenas-Ramirez, Corinne Bouillet, Diane Gailly, Benoit P. Pichon, Kevin Sartori, Sylvie Begin-Colin, Fadi Choueikani |
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| Přispěvatelé: | Institut des Molécules et Matériaux du Mans (IMMM), Le Mans Université (UM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
Materials science 010405 organic chemistry Thermal decomposition Nanoparticle General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Magnetite chemistry.chemical_compound chemistry Chemical engineering Metal oxide nanoparticles Stearate Magnetic properties Nanoparticles General Materials Science Seed mediated [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] Transmission electron microscopy ComputingMilieux_MISCELLANEOUS Iron oxide nanoparticles |
| Zdroj: | Crystal Growth & Design Crystal Growth & Design, American Chemical Society, 2020, 20 (3), pp.1572-1582. ⟨10.1021/acs.cgd.9b01300⟩ Crystal Growth & Design, 2020, 20 (3), pp.1572-1582. ⟨10.1021/acs.cgd.9b01300⟩ |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.9b01300 |
| Popis: | International audience; Iron oxide nanoparticles were synthesized by an original multistep seed-mediated growth approach. The thermal decomposition of an iron stearate precursor was performed successively up to 5 times to produce nanoparticles with a narrow size distribution from 6.4 to 15.0 nm. The chemical composition and crystal structure of each set of nanoparticles was characterized by TEM, FT-IR, XRD, and Mössbauer spectrometry. Each layer was successively grown at the surface of a pristine Fe3-δO4 nanoparticle by epitaxial relationship and resulted in a single crystal structure. An intermediate wash after each thermal decomposition step resulted in the surface oxidation of each layer. Therefore, the maghemite phase increased relative to the magnetite phase as the nanoparticle expanded. Finally, the study of the magnetic properties by SQUID magnetometry showed the trend of the magnetic anisotropy energy to increase as a function of the nanoparticle size. In contrast, the coercive field and the magnetization saturation display nonmonotonic variations that may result from the interplay of intrinsic and collective properties. |
| Databáze: | OpenAIRE |
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