Features of amplification of dipole magnetic field with linear ferromagnetic concentrator

Concentrator of magnetic field of light

In the recent decade metamaterials with magnetic permeability different than unity and unusual response to the magnetic field of incident light have been intensively explored. Existence of magnetic artificial materials created an interest in a scanning near-field magnetic microscope for studies of magnetic responses of subwavelength elementary cells of those metamaterials. We present a method o...

Reconstruction of Solar Coronal Linear Force-Free Magnetic Field

Magnetic Field Processing of Ferromagnetic MnAlC Alloys

Mn54Al44C2 forms the metastable L10 intermetallic compound, and exhibits ferromagnetic behavior after appropriate heat treatment. This material offers a low-cost, lightweight alternative to rare earth, alnico and ferrite magnets currently in use. Characterization techniques include vibrating sample magnetometry (VSM), X-Ray diffraction (XRD), optical microscopy and transmission electron microsc...

Magnetic Stability of Functionally Graded Soft Ferromagnetic Porous Rectangular Plate

This study presents critical buckling of functionally graded soft ferromagnetic porous (FGFP) rectangular plates, under magnetic field with simply supported boundary condition. Equilibrium and stability equations of a porous rectangular plate in transverse magnetic field are derived. The geometrical nonlinearities are considered in the Love-Kirchhoff hypothesis sense. The formulations are compa...

Magnetic field relaxation in ferromagnetic Ising systems

We analyze the thermal magnetization reversal processes in magnetic grains. Two experiments are carried out: swtiching time and switching field experiments. In both cases, we find that the simulated behavior is coherent with existing experimental data (the streched exponent of the switching time experiment increases with the temperature and is superior to unity; there exists a master curve for ...