A02

Thin film model systems with artificially composed phase and microstructure grown by molecular beam epitaxy (MBE) are used to identify each specific contribution to the hysteresis behaviour of Sm₂(Co, Cu, Zr, Fe)₁₇. MBE allows to control phase compositions, layer thicknesses, and stacking in order to correlate these well-defined structural properties with the domain-wall pinning strength. The results of this fundamental study are transferred to nucleation-type magnets and used to design emerging “green” and sustainable permanent magnet materials for the future.