| Zugriffsnummer | 39443 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method |
| Autor(in); Institution |
Bender, P.; Department CITIMAC, Faculty of Science, University of Cantabria, Santander, SPAIN
Bogart, L.K.; Healthcare Biomagnetics Laboratory, University College London, London, UNITED KINGDOM
Posth, Oliver; 8.2, Biosignale, PTB-Berlin
Szczerba, W.; Bundesanstalt für Materialforschung und –prüfung (BAM), Berlin, GERMANY; Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Krakow, POLAND
Rogers, S.E.; ISIS-STFC Neutron Scattering Facility, Harwell Science and Innovation Campus, Didcot, OXON, UNITED KINGDOM
Castro, A.; SOLVE Research and Consultancy AB, Lund, SWEDEN
Nilsson, L.; SOLVE Research and Consultancy AB, Lund, SWEDEN; Lund Centre for Field-Flow Fractionation, Department of Food Technology, Engineering and Nutrition, Lund University, SWEDEN
Zeng, L.J.; Department of Physics, Chalmers University of Technology, Göteborg, SWEDEN
Sugunan, A.; SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, Stockholm, SWEDEN
Sommertune, J.; SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, Stockholm, SWEDEN
Fornara, A.; SP Technical Research Institute of Sweden, Chemistry, Materials and Surfaces Unit, Stockholm, SWEDEN
González-Alonso, D.; Department CITIMAC, Faculty of Science, University of Cantabria, Santander, SPAIN
Fernández Barquín, L.; Department CITIMAC, Faculty of Science, University of Cantabria, Santander, SPAIN
Johansson, C.; RISE Acreo, Göteborg, SWEDEN
|
| Quelle/Jahr | Scientific Reports: 7 (2017), 1 - 14 |
| Artikelnummer | 45990 |
| Availability | [online only] |
| ISSN | 2045-2322 (ONLINE) |
| DOI | |
| Verlag | Nature Publishing Group |
| Freie Schlagworte | Magnetic properties and materials ; Nanoparticles |
| Zusammenfassung | The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray diffraction and asymmetrical flow field-flow fractionation. Their structure was ultimately disclosed by an indirect Fourier transform of static light scattering, small angle X-ray scattering and small angle Neutron scattering data of the colloidal dispersion. The extracted pair distance distribution functions clearly indicated that the cores were mostly accumulated in the outer surface layers of the poly(styrene) spheres. To investigate the magnetic properties, the isothermal magnetisation curves of the multicore particles (immobilised and dispersed in water) were analysed. The study stands out by applying the same numerical approach to extract the apparent moment distributions of the particles as for the indirect Fourier transform. It could be shown that the main peak of the apparent Moment distributions correlated to the expected intrinsic moment distribution of the cores. Additional peaks were observed which signaled deviations of the isothermal magnetisation behavior from the non-interacting case, indicating weak dipolar interactions. |
| Kostenfreier Zugang | Open Access Gold |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
Zitierung
Bender, P., Bogart, L., Posth, O., Szczerba, W., Rogers, S., Castro, A., Nilsson, L., Zeng, L., Sugunan, A., Sommertune, J., Fornara, A., González-Alonso, D., Fernández Barquín, L., & Johansson, C. (2017). Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion method. Scientific Reports, 7, 1–14. https://doi.org/10.1038/srep45990