Abstract
Complex measurements of the following elastic-magnetic parameters of a magnetic fluid suspended by magnetic levitation within a horizontal tube in a strong magnetic field were performed: the oscillation frequency and decay coefficient; the static, ponderomotive, and dynamic elasticity coefficients; the fluid displacement under hydrostatic pressure; magnetization curve; and the magnetic field strength and gradient. Calculations based on a model of ponderomotive elasticity with correction for the resistance of a viscous fluid in motion and on the fluid column displacement for two magnetic fluid samples agree well with the experimental magnetization curve. The discussed technique holds promise for research into magnetophoresis and nanoparticle aggregation in magnetic colloids.
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Original Russian Text © V.M. Polunin, P.A. Ryapolov, V.B. Platonov, E.V. Sheldeshova, G.V. Karpova, I.M. Aref’ev, 2017, published in Akusticheskii Zhurnal, 2017, Vol. 63, No. 4, pp. 371–379.
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Polunin, V.M., Ryapolov, P.A., Platonov, V.B. et al. Elasticity of a magnetic fluid in a strong magnetic field. Acoust. Phys. 63, 416–423 (2017). https://doi.org/10.1134/S1063771017040108
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DOI: https://doi.org/10.1134/S1063771017040108