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

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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.
4 pages, 4 figures

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Strongly Correlated Electrons, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/99175

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0509722
 http://arxiv.org/abs/cond-mat/0509722
 doi:10.1103/PhysRevB.73.094407

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arXiv