Synthesis and investigation of precipitated ensembles of magnetic nanoparticles with controlled easy axis orientation

Two samples with immobilized magnetic nanoparticles are synthesized and investigated. The first sample has randomly oriented easy axes of magnetic anisotropy; the second sample has preferentially aligned easy axes, produced via the precipitation of a colloid of ferromagnetic particles in the presenc...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2017-07, Vol.81 (7), p.784-787
Main Authors: Gabbasov, R. R., Yurenya, A. Y., Cherepanov, V. M., Polikarpov, M. A., Chuev, M. A., Panchenko, V. Y.
Format: Article
Language:English
Subjects:
Axes (reference lines)
Chemical precipitation
Ferromagnetism
Hadrons
Heavy Ions
Magnetic anisotropy
Magnetic fields
Magnetism
Nanoparticles
Nuclear Physics
Physics
Physics and Astronomy
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Summary:Two samples with immobilized magnetic nanoparticles are synthesized and investigated. The first sample has randomly oriented easy axes of magnetic anisotropy; the second sample has preferentially aligned easy axes, produced via the precipitation of a colloid of ferromagnetic particles in the presence of a magnetic field. It is shown that the precipitation of an aqueous suspension of nanoparticles in the presence of a magnetic field greatly changes the anisotropy of a sample, compared to one prepared by precipitation without a magnetic field. The second sample exhibits a preferential direction of the easy axes of magnetic anisotropy that coincides with the direction of the external magnetic field applied in the drying process of sample preparation.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873817070115