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- Title
Probing the Frequency Dispersion of Magnetic Permeability of a Sample during Dynamic Interaction with a Magnetized Probe.
- Authors
Dedkov, G. V.
- Abstract
The forces acting on a magnetic particle during nonrelativistic motion parallel to the surface of a homogeneous medium with a frequency dispersion of the magnetic permeability are considered. General expressions are obtained for the normal (attractive) and lateral (stopping) forces acting on a small dipole particle and an extended probe. It is shown that for an arbitrary orientation of the vector of the dipole magnetic moment of the particle, along with the force of attraction and the drag force, there also appears a velocity-dependent lateral force perpendicular to the velocity vector. The possibility of using these results to study the frequency-dependent magnetic permeability of nanostructured materials and films in the dynamic scanning mode of magnetic force microscopy (MCM) with magnetic probes is discussed. Numerical estimates are given for the magnitude of the expected forces, friction coefficients, and changes in the quality factor of the MFM oscillators in the case of frequency dispersion of the magnetic permeability of the relaxation type.
- Publication
Technical Physics, 2022, Vol 66, Issue 4, p243
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S1063784222050012