Spin reorientation of the Fe moments in Eu${}_{0.5}$Ca${}_{0.5}$Fe${}_2$As${}_2$: Evidence for a strong interplay of Eu and Fe magnetism

W. T. Jin, M. Meven, A. P. Sazonov +6

Using complementary polarized and unpolarized single-crystal neutron diffraction, we have investigated the temperature-dependent magnetic structures of Eu${}_{0.5}$Ca${}_{0.5}$Fe${}_2$…