A5081224230- Iron oxide chemistry and applications
- Magnetic Properties and Synthesis of Ferrites
- Magnetic properties of thin films
- Characterization and Applications of Magnetic Nanoparticles
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Pharmacological Effects and Toxicity Studies
- Nanomaterials for catalytic reactions
- Chemical Synthesis and Characterization
- Pigment Synthesis and Properties
Centre National de la Recherche Scientifique
2019-2024
Synchrotron soleil
2019-2024
Institut de Physique et Chimie des Matériaux de Strasbourg
2019-2024
Université de Strasbourg
2019-2024
Institut Universitaire de France
2022
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2020-2021
Laboratoire Léon Brillouin
2020-2021
Exchange coupled nanoparticles that combine hard and soft magnetic phases are very promising to enhance the effective anisotropy while preserving sizes below 20 nm. However, core–shell structure is usually insufficient produce rare earth-free ferro(i)magnetic blocked at room temperature. We report on onion-type prepared by a three-step seed mediated growth based thermal decomposition method. The core@shell@shell consists of core an external shell Fe3−δO4 separated intermediate Co-doped...
Exchange coupled core-shell nanoparticles present high potential to tune adequately the magnetic properties for specific applications such as nanomedicine or spintronics. Here, we report on design of by performing successive thermal decomposition Fe and Co complexes. Depending stability concentration precursor, were able control formation a hard ferrimagnetic (FiM) Co-ferrite shell an antiferromagnetic (AFM) CoO at surface soft FiM Fe3-δO4 core. The was also found occur through two different...
A series of exchange-coupled magnetic nanoparticles combining several phases in an onion-type structure were synthesized by performing a three-step seed-mediated growth process.
Nanoparticles that combine several magnetic phases offer wide perspectives for cutting edge applications because of the high modularity their properties. Besides addition characteristics intrinsic to each phase, interface results from core–shell and, further, onion structures leads synergistic properties such as exchange coupling. Such a phenomenon is interest overcome superparamagnetic limit iron oxide nanoparticles which hampers potential data storage or sensors. In this manuscript, we...
Iron oxide nanoparticles were synthesized by an original multistep seed-mediated growth approach. The thermal decomposition of iron stearate precursor was performed successively up to 5 times produce with a narrow size distribution from 6.4 15.0 nm. chemical composition and crystal structure each set characterized TEM, FT-IR, XRD, Mössbauer spectrometry. Each layer grown at the surface pristine Fe3-δO4 nanoparticle epitaxial relationship resulted in single structure. An intermediate wash...
Solvent annealing at around 300 °C resulted in a significant modification of the structure and magnetic properties core–shell metal oxide nanoparticles as shown by DANES XMCD.