The contributions of Gilbert-damping and inhomogeneous exchange effects on the electromagnetic short waves propagation in saturated ferrite films

Jin, Xin-Wei; Lin, Ji

doi:10.1016/j.jmmm.2020.167192

Cited by 15 publications

(3 citation statements)

References 26 publications

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“…An anisotropic medium is one in which the electrical and/or magnetic properties depend on the direction of field vectors (Yakhno &Çiçek, 2014). Gilbert-damping can be used to reduce the amplitude and velocity of loop-solitons during propagation, resulting in slower decay rates than those found in linear theory for multi-solitons (Jin & Lin, 2020). Through cyclotron resonance, the axial magnetic field enhances nonlinear coupling, while the density ripple provides phase synchronism (Kumar et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Computational Analysis of Weakly Magnetized Plasma's Effects on Electromagnetic Wave Propagating Perpendicular to the Magnetic Field

G. Maikasuwa,

A. Muhammad,

D.T. Agana

et al. 2023

IJAEMR

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Magnetised plasma influences electromagnetic wave propagation, this resulting in polarisations at different velocities, an effect that can result in ghost signals. This work provided critical information on the effects of magnetized plasma on electromagnetic (EM) wave propagation perpendicular to the magnetic field. Electromagnetic waves propagating perpendicular to the magnetic field in a weakly magnetized plasma were studied. Furthermore, there are two modes of EM wave propagation perpendicular to the field: ordinary (O) and extraordinary (X). The values of the ordinary (O) mode's frequency were obtained by substituting the values of its wave number (k) into its dispersion relation, while the same frequency values were substituted to obtain the values of its refractive index (η_O^2). The plasma frequency values derived from the Bohm-Gross formulae for electron plasma. The plasma frequency values obtained from the Bohm-Gross formulae for electron plasma waves were substituted into the extraordinary mode dispersion relation to obtain frequency values with cut-off frequencies at ω_L and ω_R. The refractive index values were calculated using the same frequency values (X-mode). The results revealed that for EM wave propagation perpendicular to magnetic field in a weakly magnetized plasma in vacuum, the speed as well as the direction was unperturbed. The results also revealed that the properties of electromagnetic waves propagating perpendicular to magnetic field in a weakly magnetized plasma in an ordinary (O) mode were different from those for extraordinary (X) mode, with the former having a higher phase speed than the latter. Additionally, we discovered that, the phase velocity (υP) exceeded the speed of light (c), which is consistent with the basic ideas of special relativity.

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Section: Introductionmentioning

confidence: 99%

Computational Analysis of Weakly Magnetized Plasma's Effects on Electromagnetic Wave Propagating Perpendicular to the Magnetic Field

G. Maikasuwa,

A. Muhammad,

D.T. Agana

et al. 2023

IJAEMR

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“…As is known, nonlinear integrable evolution equations have been used in many nonlinear fields, such as fluid mechanics, [1][2][3] nonlinear optics, [4][5][6] plasma physics, [7,8] ferrimagnetics [9] and Bose-Einstein condensation. [10] A class of physically important integrable equations, such as the KP equation and the cubic gKP equation, has been applied to describe long wave propagation of small amplitude propagating in plasma physics [11,12] and the collapse of ultrashort spatiotemporal pulses in nonlinear optics.…”

Section: Introductionmentioning

confidence: 99%

Residual symmetries, consistent-Riccati-expansion integrability, and interaction solutions of a new (3+1)-dimensional generalized Kadomtsev-Petviashvili equation

Cai

Lin

2022

Chinese Phys. B

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With the aid of the Painlevé analysis, we obtain residual symmetries for a new (3+1)-dimensional generalized Kadomtsev–Petviashvili (gKP) equation. The residual symmetry is localized and the finite transformation is proposed by introducing suitable auxiliary variables. In addition, the interaction solutions of the (3+1)-dimensional gKP equation are constructed via the consistent Riccati expansion method. Particularly, some analytical soliton-cnoidal interaction solutions are discussed in graphical way.

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“…Our present concern in this work is to consider the ferrite realm within the viewpoint of Landau-Lifshitz-Gilbert formalism [7,8] where an additional term is added to equation (1.1) which controls the magnetic relaxation process and determine how fast the magnetization is restored to its equilibrium position. We then pay attention to the interaction of ferrites with the circularly polarized waves while comparing the results to the linearly polarized cases [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Polarized waveguide excitations in microwave ferrites: The singularity structure analysis

Kamdem¹,

Lemoula²,

Kuetche³

et al. 2021

Phys. Scr.

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In this work, we delve into the structure of some typical microwave ferrites while investigating the propagation of nonlinear circularly polarized waveguide excitations. In the standpoint, we consider a ferromagnetic slab insulator of 0.5 mm thickness submitted to an external transverse magnetic field.Combining the Landau-Lifshitz-Gilbert formalism of evolution of the magnetization to Maxwell equations, we survey the interaction process of an electromagnetic wave perturbation with the slab. As a result, using the perturbative scaling approach suitable to high-frequency excitations, we derive some new evolution system describing the propagation of circularly polarized waves in the medium. Pursuing further with the analysis, we unwrap the integrability properties of the new system using the singularity structure method where sufficient arbitrary functions are generated. Taking advantage of such properties, we construct a rich variety of nonlinear excitations, solutions to the ferrite dynamics. Additionally, we address some physical implications of the results obtained previously.

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The contributions of Gilbert-damping and inhomogeneous exchange effects on the electromagnetic short waves propagation in saturated ferrite films

Cited by 15 publications

References 26 publications

Computational Analysis of Weakly Magnetized Plasma's Effects on Electromagnetic Wave Propagating Perpendicular to the Magnetic Field

Computational Analysis of Weakly Magnetized Plasma's Effects on Electromagnetic Wave Propagating Perpendicular to the Magnetic Field

Residual symmetries, consistent-Riccati-expansion integrability, and interaction solutions of a new (3+1)-dimensional generalized Kadomtsev-Petviashvili equation

Polarized waveguide excitations in microwave ferrites: The singularity structure analysis

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