Distribution of magnetic domain pinning fields in GaMnAs ferromagnetic films

Jungtaek Kim; D. Y. Shin; Sanghoon Lee; X. Liu; J. K. Furdyna

doi:10.1103/PhysRevB.78.075309

Distribution of magnetic domain pinning fields in GaMnAs ferromagnetic films

Materials Science 2009-11-13 v1 Other Condensed Matter

Authors: Jungtaek Kim , D. Y. Shin , Sanghoon Lee , X. Liu , J. K. Furdyna

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Abstract

Using the angular dependence of the planar Hall effect in GaMnAs ferromagnetic films, we were able to determine the distribution of magnetic domain pinning fields in this material. Interestingly, there is a major difference between the pinning field distribution in as-grown and in annealed films, the former showing a strikingly narrower distribution than the latter. This conspicuous difference can be attributed to the degree of non-uniformity of magnetic anisotropy in both types of films. This finding provides a better understanding of the magnetic domain landscape in GaMnAs that has been the subject of intense debate.

Keywords

magnetic domain pinning GaMnAs ferromagnetic films planar Hall effect magnetic anisotropy annealing

Cite

@article{arxiv.0803.0714,
  title  = {Distribution of magnetic domain pinning fields in GaMnAs ferromagnetic films},
  author = {Jungtaek Kim and D. Y. Shin and Sanghoon Lee and X. Liu and J. K. Furdyna},
  journal= {arXiv preprint arXiv:0803.0714},
  year   = {2009}
}

Distribution of magnetic domain pinning fields in GaMnAs ferromagnetic films

Abstract

Keywords

Cite

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