The Investigation of Superparamagnetic Colloidal Particles FemOn-SiO2

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Colloidal particles based on iron oxides and silica were obtained by sol-gel method. Hysteresis curves at various temperatures were built by MPMS SQUID VSM. Theoretically calculated values of samples remanent magnetization were compared to experimental data. Despite of the average particles size about 10 nm sample has remanent magnetic moment. The phenomena may be explained on the basis of magnetostatic interaction between particles. The magnetic state of analyzed samples can be conditional on the presence of several phases with very different magnetic properties or the size effect.

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Periodical:

Solid State Phenomena (Volume 247)

Edited by:

Nikolay Gennadievich Galkin

Pages:

138-141

Citation:

P. V. Kharitonskii et al., "The Investigation of Superparamagnetic Colloidal Particles FemOn-SiO2", Solid State Phenomena, Vol. 247, pp. 138-141, 2016

Online since:

March 2016

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$38.00

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[1] R. Massart. Preparation of aqueous magnetic liquids in alkaline and acidic media, IEEE trans. magn., 17, 2 (1981), 1247-1248.

DOI: https://doi.org/10.1109/tmag.1981.1061188

[2] Yu.V. Bogachev, Ju.S. Chernenco, K.G. Gareev et al. The Study of Aggregation Processes in Colloidal Solutions of Magnetite–Silica Nanoparticles by NMR Relaxometry, AFM, and UV–Vis Spectroscopy, Appl. Mag. Res., 45, 4 (2014), 329-337.

DOI: https://doi.org/10.1007/s00723-014-0525-7

[3] V.I. Al'myashev, K.G. Gareev, S.A. Ionin et al. Investigation of the Structure, Elemental and Phase Compositions of Fe3O4–SiO2 Composite Layers by Scanning Electron Microscopy, X-Ray Spectroscopy, and Thermal Nitrogen Desorption, Phys. Sol. St., 56, 11 (2014).

DOI: https://doi.org/10.1134/s1063783414110031

[4] P. Kharitonskii, A. Frolov, S. Boev, V. Rudnev et al., Influence of magnetostatic interactions on magnetization process of iron-containing coatings, produced using the plasma electrolytic oxidation method, Sol. St. Phen., 215 (2014), 200-203.

DOI: https://doi.org/10.4028/www.scientific.net/ssp.215.200

[5] V. Rudnev, A. Ustinov, I. Lukiyanchuk, P. Kharitonskii et al., Magnetic properties of plasma electrolytic iron-containing oxide coatings on aluminum and simulation of demagnetizing process, Sol. St. Phen., 168-169 (2011), 289-291.

DOI: https://doi.org/10.4028/www.scientific.net/ssp.168-169.289

[6] E. Kneller, F.E. Luborsky. Particle size dependence of coercivity and remanence of single-domain particles, J. Appl. Phys., 34 (1963), 656-658.

DOI: https://doi.org/10.1063/1.1729324

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