Motions of objects with magnetizable materials along a horizontal plane in a rotating magnetic field

• Magnetizable objects in a rotating magnetic field are examined experimentally.
• Magnetizable polymer bodies and magnetic fluid droplets are studied.
• Objects rotate with the field and have translational velocity along the bottom.
• Nonmonotonic velocity dependencies on the field frequency are obtained.
• Change of droplets velocity direction at some field frequency is found.

The motions of objects with magnetizable materials in a viscous non-magnetic fluid near a horizontal bottom of a vessel in an uniform applied rotating magnetic field are examined experimentally. The objects rotate in the same direction as the field and have a translational velocity along the bottom. Two types of objects, prolate bodies with a magnetizable polymer and magnetic fluid droplets, are studied. Dependencies of an average translational velocity of bodies and droplets on the field frequency for different field amplitudes and other parameters are obtained. The velocity direction dependence on the field frequency is found only for magnetic fluid droplets.