A Magnetic Analog of Quincke Rotation

The possibility of observing a magnetic analogue of the Quincke rotation is discussed, i.e., spontaneous rotation in a constant uniform magnetic field B of a spherical particle. Two variants of the experiment are considered: 1) a weakly magnetic particle immersed in a ferromagnetic liquid and 2) a d...

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Bibliographic Details
Published in:Technical physics letters 2021-09, Vol.47 (9), p.653-655
Main Author: Grachev, A. I.
Format: Article
Language:English
Subjects:
Axes of rotation
Classical and Continuum Physics
Diamagnetism
Ferromagnetism
Magnetism
Physics
Physics and Astronomy
Rotating spheres
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Summary:The possibility of observing a magnetic analogue of the Quincke rotation is discussed, i.e., spontaneous rotation in a constant uniform magnetic field B of a spherical particle. Two variants of the experiment are considered: 1) a weakly magnetic particle immersed in a ferromagnetic liquid and 2) a diamagnetic sphere levitating in a vacuum. In the first case, spontaneous rotation is possible in fields B < 0.1 T for relaxation times of the magnetization of a particle of the order of 10 –3 s. The fundamental condition for the accelerated rotation of the diamagnetic sphere is the limitation of its rotational degree of freedom with the only possible direction for the axis of rotation orthogonal to the vector B .
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785021070063