Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Eddy current damping of a moving domain wall: beyond the quasistatic
  approximation   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.

22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs