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

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] Effect of the number of iron oxide nanoparticle layers on the magnetic properties of nanocomposite lbl assemblies / I. Dincer, O. Tozkoparan, S. German et al. // Journal of Magnetism and Magnetic Materials. — 2012. — Vol. 324, no. 19. — P. 2958–2963. 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. © 2012 Elsevier B.V. All rights reserved. [ DOI ]

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