Abstract
The paper presents the esults of measuring the elastic parameters of an oscillatory system (coefficient of pondermotive elasticity, damping factor, and oscillation frequency) whose viscous inertial element is represented by a magnetic fluid confined in a tube by magnetic levitation in a strong magnetic field. The role of elasticity is played by the pondermotive force acting on thin layers at the upper and lower ends of the fluid column. It is shown that, by measuring the elastic oscillation frequencies of the magnetic fluid column, it is possible to develop a fundamentally new absolute method for determining the saturation magnetization of a magnetic colloid.
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Original Russian Text © V.M. Polunin, P.A. Ryapolov, V.B. Platonov, A.E. Kuz’ko, 2016, published in Akusticheskii Zhurnal, 2016, Vol. 62, No. 3, pp. 302–307.
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Polunin, V.M., Ryapolov, P.A., Platonov, V.B. et al. Free oscillations of magnetic fluid in strong magnetic field. Acoust. Phys. 62, 313–318 (2016). https://doi.org/10.1134/S1063771016030131
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DOI: https://doi.org/10.1134/S1063771016030131