Eddy current damping of a moving domain wall: beyond the quasistatic approximation

Details Eddy current damping of a moving domain wall: beyond the quasistatic approximation Eddy current damping of a moving domain wall: beyond the quasistatic approximation

2007-06-14

arxiv.org/abs/0706.2122v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

9 pages, 4 figures, submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.76.224416

In conducting ferromagnetic materials, a moving domain wall induces eddy currents in the sample which give rise to an effective retarding pressure on the domain wall. We show here that the pressure is not just proportional to the instantaneous velocity of the wall, as often assumed in domain wall models, but depends on the history of the motion. We calculate the retarding pressure by solving the Maxwell equations for the field generated by the eddy currents, and show how its effect can be accounted for by associating a negative effective mass to the magnetic wall. We analyze the dependence of this effect on the sample geometry and discuss the implications for Barkhausen noise measurements.

Affiliated with

Also associated with

No associations

Rating

Eddy current damping of a moving domain wall: beyond the quasistatic approximation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Eddy current damping of a moving domain wall: beyond the quasistatic approximation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eddy current damping of a moving domain wall: beyond the quasistatic approximation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-331197