Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 18, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-015-3312-y
Keywords
Magnetic nanoparticle; Electrodynamic spraying; Nanoparticle deposition; Ultrasensitive magnetometry
Categories
Funding
- Grant CARNAMAG [ANR 2010 JCJC 10031]
- Grant NEXT [ANR-10-LABX-0037]
- University of Toulouse
- Region Midi-Pyrenees in France
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The deposition of isolated magnetic nanoparticles onto a substrate was performed using electrohydrodynamic spraying. Two kinds of nanoparticles were sprayed, 11 nm CoFe carbide nanospheres and 10.5 nm Fe nanocubes. By studying carefully the evolution of the sprayed charged droplets and the mechanism of nanoparticle dispersion in them, we could optimize the nanoparticle concentration within the initial nanoparticle solution (i) to reduce the magnetic interaction and therefore prevent agglomeration and (ii) to obtain in a relatively short period (1 h) a deposit of isolated magnetic nanoparticles with a density of up to 400 nanoparticles per lm 2. These results open great perspectives for magnetic measurements on single objects using advanced magnetometry techniques as long as spintronics applications based on single chemically synthesized magnetic nanoparticles.
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