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Related Concept Videos

Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Electromagnetic Waves in Matter01:30

Electromagnetic Waves in Matter

Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium, μ.
Furthermore, the...
Magnetic Fields01:27

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
Standing Electromagnetic Waves01:15

Standing Electromagnetic Waves

Electromagnetic waves can be reflected; the surface of a conductor or a dielectric can act as a reflector. As electric and magnetic fields obey the superposition principle, so do electromagnetic waves. The superposition of an incident wave and a reflected electromagnetic wave produces a standing wave analogous to the standing waves created on a stretched string.
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
Magnetic Field Due To A Thin Straight Wire01:27

Magnetic Field Due To A Thin Straight Wire

Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.

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Related Experiment Video

Updated: Jun 18, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Short waves in ferromagnetic media.

H Leblond1, M Manna

  • 1Laboratoire POMA, CNRS-FRE 2988, Université d'Angers, 2 Boulevard Lavoisier, 49045 Angers Cedex 1, France.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|November 13, 2009
PubMed
Summary
This summary is machine-generated.

Nonlinear electromagnetic short waves in ferromagnetic films can form stable or unstable solitons. Unstable solitons decay into stable two-dimensional lumps, offering insights into wave propagation dynamics.

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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Area of Science:

  • Condensed Matter Physics
  • Nonlinear Dynamics
  • Electromagnetism

Background:

  • Understanding nonlinear wave propagation in magnetic materials is crucial for developing advanced electronic devices.
  • Ferromagnetic films exhibit complex electromagnetic behaviors under external magnetic fields.

Purpose of the Study:

  • To investigate the propagation of nonlinear electromagnetic short waves in a magnetically saturated ferromagnetic thick film.
  • To derive and analyze a mathematical model for these wave dynamics.
  • To study the stability and decay of solitons into localized structures.

Main Methods:

  • Derivation of a (2+1) dimensional asymptotic model equation, generalizing the sine-Gordon equation.
  • Analytical investigation of line soliton solutions and their stability conditions.
  • Numerical and analytical study of the decay of unstable solitons into two-dimensional lumps.

Main Results:

  • A generalized sine-Gordon model was derived for nonlinear electromagnetic short waves.
  • Conditions for the stability of line soliton solutions were established.
  • Unstable solitons were shown to decay into stable two-dimensional lumps.

Conclusions:

  • The study provides a theoretical framework for understanding nonlinear wave phenomena in ferromagnetic films.
  • The findings contribute to the knowledge of soliton dynamics and their transformations in magnetic materials.
  • The results have implications for the design and behavior of spintronic devices.