We solve the Einstein-Maxwell-Klein-Gordon system of equations and derive a compact, static axially symmetric magnetized object which is electrically neutral made two complex massive-charged scalar fields. describe several properties such solution, including torus form matter density expected dipolar distribution magnetic field, with some peculiar features in central regions. The solution shows...

The behavior of grain-growth chemical remanent magnetizations (gCRM) are investigated for different coercivity and magnetostatic-interaction-field distributions acquisition conditions using a thermally activated Preisach model assemblages interacting single-domain grains. A new growth-rate dependent equation was derived, from which it found that gCRM intensity is over 10% more sensitive to grow...

An overview of the magnetostatic field synthesis method, Variable Field Generation (VFG), and results from applying it to a test case to design magneto-plasma-aerodynamic (MPAD) devices to observe algorithm performance in the MATLAB programming environment are presented in this paper. The algorithm applied to this test case included integrating the Magnetostatic module of the finite element sof...

Micromagnetic simulations are elaborated to describe the magnetic dynamics in ferromagnetic bodies. In these simulations, most of the time is spent on the evaluation of the magnetostatic field in the magnetic material. This paper presents a new numerical finite difference scheme for the evaluation of the magnetostatic field based on the fast multipole method (FMM). The interactions between fini...

First-order reversal curve (FORC) diagram, which visualizes the variation of magnetic interaction on a field plane, has been applied to nanocrystalline Ce-Fe-B melt-spinning ribbons. The FORC diagram exhibits different vertical spread along Hu axis when is parallel or perpendicular ribbon surface. discrepancy corresponds intergranular interactions, can also be verified by Henkel plot, another m...

The phase velocity of light is co–parallel to the direction of energy flow in classical vacuum. However, in certain uncommon materials, these two vectors can be oppositely directed, in which case the phase velocity is termed ‘negative’. This negative phase velocity (NPV) gives rise to many exotic phenomenons, such as negative refraction, inverse Doppler shift and inverse C̆erenkov radiation, and...

Ordinal excitations of three-magnon decay, modulation instability and four-magnon decay processes of magnetostatic surface waves propagating in a pure yttrium iron garnet film are investigated in accordance with the relationship between the magnetostatic wave frequency and the internal magnetic field. Onset of the modulation instability is realized as a result of tnodification of n~agnetostatic...

Localized magnetic topological solitons with Hopf index of 1 in an unbounded bulk magnet are studied theoretically, starting the classical micromagnetic Hamiltonian. It is shown analytically that (like Bloch and Néel walls magnetism) there two possible stable configurations these nanoobjects, which equivalent topologically. Their stability regions plotted on a phase diagram field — uniaxial ani...