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A. Donges, S. Khmelevskyi, A. Deak, R. Abrudan, D. Schmitz, I. Radu, F. Radu, L. Szunyogh, U. Nowak:
"Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo₅: Multiscale modeling and element-specific measurements";
Physical Review B, 96 (2017), 0244121 - 0244127.

We use a multiscale approach linking ab initio calculations for the parametrization of an atomistic spin model
with spin dynamics simulations based on the stochastic Landau-Lifshitz-Gilbert equation to investigate the
thermal magnetic properties of the ferrimagnetic rare-earth transition-metal intermetallic DyCo5. Our theoretical
findings are compared to elemental resolved measurements on DyCo5 thin films using the x-ray magnetic circular
dichroism technique. With our model, we are able to accurately compute the complex temperature dependence
of the magnetization. The simulations yield a Curie temperature of TC = 1030 K and a compensation point
of Tcomp = 164 K, which is in a good agreement with our experimental result of Tcomp = 120 K. The spin
reorientation transition is a consequence of competing elemental magnetocrystalline anisotropies in connection
with different degrees of thermal demagnetization in the Dy and Co sublattices. Experimentally, we find this spin
reorientation in a region from TSR1,2 = 320 to 360 K, whereas in our simulations the Co anisotropy appears to
be underestimated, shifting the spin reorientation to higher temperatures.