Exchange coupling in ultrathin epitaxial yttrium iron garnet filmsE. Popova, N. Keller, F. Jomard, L. Thomas, M.-C. Brianso, F. Gendron, M. Guyot and M. TessierEur. Phys. J. B, 31 1 (2003) 69-74DOI: https://doi.org/10.1140/epjb/e2003-00010-2