Soft x-ray magnetic circular dichroism study on Gd-doped EuO thin films

H. Ott; S. J. Heise; R. Sutarto; Z. Hu; C. F. Chang; H. H. Hsieh; H. -J. Lin; C. T. Chen; L. H. Tjeng

doi:10.1103/PhysRevB.73.094407

Soft x-ray magnetic circular dichroism study on Gd-doped EuO thin films

Strongly Correlated Electrons 2007-05-23 v1 Materials Science

Authors: H. Ott , S. J. Heise , R. Sutarto , Z. Hu , C. F. Chang , H. H. Hsieh , H. -J. Lin , C. T. Chen , L. H. Tjeng

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Abstract

We report on the growth and characterization of ferromagnetic Gd-doped EuO thin films. We prepared samples with Gd concentrations up to 11% by means of molecular beam epitaxy under distillation conditions, which allows a very precise control of the doping concentration and oxygen stoichiometry. Using soft x-ray magnetic circular dichroism at the Eu and Gd M4,5 edges, we found that the Curie temperature ranged from 69 K for pure stoichiometric EuO to about 170 K for the film with the optimal Gd doping of around 4%. We also show that the Gd magnetic moment couples ferromagnetically to that of Eu.

Keywords

soft x-ray magnetic circular dichroism Gd-doped EuO thin films ferromagnetic Curie temperature magnetic coupling

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@article{arxiv.cond-mat/0509722,
  title  = {Soft x-ray magnetic circular dichroism study on Gd-doped EuO thin films},
  author = {H. Ott and S. J. Heise and R. Sutarto and Z. Hu and C. F. Chang and H. H. Hsieh and H. -J. Lin and C. T. Chen and L. H. Tjeng},
  journal= {arXiv preprint arXiv:cond-mat/0509722},
  year   = {2007}
}

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4 pages, 4 figures

Soft x-ray magnetic circular dichroism study on Gd-doped EuO thin films

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