Interlayer coupling in [Er|Tb] superlattices

Applied Physics A Solids and Surfaces - Tập 74 - Trang s1517-s1519 - 2002
J. Voigt1, E. Kentzinger1, U. Rücker1, W. Schmidt1, M. Ohl1, D. Hupfeld1, T. Brückel1
1Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany, , DE

Tóm tắt

We report on interlayer coupling in [Ern(Er)|Tbn(Tb)] superlattices. By means of neutron diffraction, helix-like and conical magnetic structures are observed in an [Er20|Tb5] sample. These structures are correlated across terbium layers at low temperatures, where bulk terbium is ferromagnetic. Moreover, resonant X-ray magnetic scattering gives clear evidence that the 5d conduction band of terbium is polarized according to the erbium magnetic structure.