Dislocation theory of the energy loss during remagnetization of a ferromagnet
Abstract
A general solution is found for the equation of motion of domain walls in real ferromagnets (containing dislocations) for arbitrary displacements at low frequencies of the remagnetizing field. The interaction of domain laws with dislocations is described in terms of the PeachKoehler stochastic force. The energy loss during remagnetization due to this interaction and due to fluctuations in the domainwall velocity is shown to depend on the dislocation structure and to be proportional to the square of the remagnetization frequency. Equations are derived to explain the temperature dependence of the energy loss during the remagnetization of transformersteel samples varying in dislocation structure.
 Publication:

Soviet Physics Journal
 Pub Date:
 May 1971
 DOI:
 10.1007/BF00818940
 Bibcode:
 1971SvPhJ..14..626M