Frequency-dimensional magnetoelastic effects in a magnet taking into account the DG offsets

   Purpose. It is calculated to identify patterns related to frequency-dimensional magnetoelastic effects in a magnet, taking into account DG displacements. To describe the frequency-dimensional effects caused by the geometric parameters of the domain boundaries relative to the voltage wavelength. Since domain boundaries have a certain inertia, this leads to some peculiarities when they shift under the influence of force fields.

   Methods. The paper describes an algorithm for calculating the loss components based on a macroscopic approach, and elucidates the reason for their decrease at critical frequencies in the case of low voltages σ. The review is based on the flexible domain boundary model. The proposed methods for the analytical description of magnetically elastic energy dissipation and machine modeling of the corresponding processes will be useful for both scientific and practical purposes, for example, when creating special electro- and radio-technical ferromagnetic materials.

   Results. The analysis showed that magnetically elastic losses arising from elastic vibrations at critical frequencies in a magnet reach a minimum, provided that the wavefront does not coincide with the plane of the domain boundary in its initial position. This is true for domain boundaries fixed by point or linear defects.

   Conclusion. The approximation of the natural oscillation frequencies of the DG to critical values leads to a sharp increase in the resonant component of internal friction. The resulting value, under the influence of this component, changes slightly. The revealed features of magnetically elastic energy dissipation are of interest in laboratory research and are promising for practice in determining crystal orientation and texture description, as well as in creating new promising magnetic materials.

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