Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 50: Bulk Materials: Soft and Hard Permanent Magnets
MA 50.7: Talk
Thursday, March 12, 2026, 16:30–16:45, POT/0151
A new look at the magnetic properties of DyCo5 — Alena Vishina1, Konstantin Skokov2, Hiroki Tsuchiura3, Patrik Thunström1, Alex Aubert2, Oliver Gutfleisch2, Olle Eriksson1,4, and •Heike C. Herper1 — 1Uppsala University, Uppsala, Sweden — 2Technische Universität Darmstadt, Germany — 3Tohoku University, Sendai, Japan — 4WISE-Wallenberg Initiative Materials Science, Uppsala University
Rare earth (RE) intermetallics such as RECo5 impress with a huge variety of magnetic properties arising from the interplay of RE 4f and transition metal 3d orbitals. Our recent study provides new insights in DyCo5.[1] Measurements were carried our on single crystals in applied fields up to 14T. We employed a multiscale modelling theory combining dynamical mean field theory (as implemented in the LMTO code RSPt) and atomistic spin-dynamics (UppASD) simulations with the effective spin model for RE compounds to understand the origin of the experimental findings.
Our multiscale method allows to explain the experimentally observed magnetisation anisotropy as well as the behaviour around the magnetic compensation point. For DyCo5, both experiment and theory, show that the compensation is incomplete and field dependent. Furthermore, key experimental features - such as the saturation behaviour at high fields and the evolution of the magnetic moment at different temperatures - are successfully reproduced.
[1] http://arxiv.org/abs/2511.17087
Keywords: RE intermetallics; DMFT; spin dynamics; high field measurements; multiscale modelling