Effect of the number of iron oxide nanoparticle layers on the magnetic properties of nanocomposite LbL assemblies

Ilker Dincer, Onur Tozkoparan, Sergey V. German, Alexey V. Markin, Oguz Yildirim, Gennady B. Khomutov, Dmitry A. Gorin, Sergey B. Venig, Yalcin Elerman

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18 Citations (Scopus)

Abstract

Aqueous colloidal suspension of iron oxide nanoparticles has been synthesized. Z-potential of iron oxide nanoparticles stabilized by citric acid was -35±3 mV. Iron oxide nanoparticles have been characterized by the light scattering method and transmission electron microscopy. The polyelectrolyte/iron oxide nanoparticle thin films with different numbers of iron oxide nanoparticle layers have been prepared on the surface of silicon substrates via the layer-by-layer assembly technique. The physical properties and chemical composition of nanocomposite thin films have been studied by atomic force microscopy, magnetic force microscopy, magnetization measurements, Raman spectroscopy. Using the analysis of experimental data it was established, that the magnetic properties of nanocomposite films depended on the number of iron oxide nanoparticle layers, the size of iron oxide nanoparticle aggregates, the distance between aggregates, and the chemical composition of iron oxide nanoparticles embedded into the nanocomposite films. The magnetic permeability of nanocomposite coatings has been calculated. The magnetic permeability values depend on the number of iron oxide nanoparticle layers in nanocomposite film.

Original languageEnglish
Pages (from-to)2958-2963
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume324
Issue number19
DOIs
Publication statusPublished - Sep 2012
Externally publishedYes

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Keywords

  • Layer-by-layer assembly
  • Magnetic permeability
  • Magnetic properties
  • Magnetite nanoparticles
  • Nanocomposite films

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Dincer, I., Tozkoparan, O., German, S. V., Markin, A. V., Yildirim, O., Khomutov, G. B., Gorin, D. A., Venig, S. B., & Elerman, Y. (2012). Effect of the number of iron oxide nanoparticle layers on the magnetic properties of nanocomposite LbL assemblies. Journal of Magnetism and Magnetic Materials, 324(19), 2958-2963. https://doi.org/10.1016/j.jmmm.2012.04.002