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CoPt3 nanoparticles adsorbed on SiO2: a GISAXS and SEM study

  • Jan I. Flege (a1), Thomas Schmidt (a1), Gabriela Alexe (a1), Torben Clausen (a1), Sigrid Bernstorff (a2), Igor Randjelovic (a3), Vesna Aleksandrovic (a3), Andreas Kornowski (a3), Horst Weller (a3) and Jens Falta (a1)...

Abstract

Ultra-thin CoPt3 nanoparticle films have been prepared on SiO2 surfaces using a Langmuir-Blodgett (LB) deposition technique. The structural properties of the overlayers have been investigated by grazing-incidence small-angle x-ray scattering (GISAXS) and high-resolution scanning electron microscopy (SEM) for the first time. Self-assembly of the nanoparticles is found and with GISAXS an average particle-particle distance of (8.23 ± 0.06) nm is determined, in good agreement with the SEM results. A particle correlation length of (22.3 ± 1.2) nm was derived which is shown to be independent of the surface coverage. The latter quantity may be controlled by choice of a suitable retraction speed during the LB step.

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CoPt3 nanoparticles adsorbed on SiO2: a GISAXS and SEM study

  • Jan I. Flege (a1), Thomas Schmidt (a1), Gabriela Alexe (a1), Torben Clausen (a1), Sigrid Bernstorff (a2), Igor Randjelovic (a3), Vesna Aleksandrovic (a3), Andreas Kornowski (a3), Horst Weller (a3) and Jens Falta (a1)...

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