Magnetic structure of EuFe2As2 determined by single-crystal neutron diffraction
Single-crystal neutron-diffraction studies were carried out to determine the magnetic structure and to investigate the coupling of two magnetic sublattices. Long-range AFM ordering of Fe and Eu spins was observed below 190 and 19 K, respectively. It takes place at the same temperature as the tetragonal to orthorhombic structural phase transition, which indicates the strong coupling between structural and magnetic components. While both Fe and Eu spins are aligned along the long a axis as experimentally determined, our studies suggest a weak coupling between the Fe and Eu magnetism.
Y. Xiao et al., “Magnetic structure of EuFe2As2 determined by single-crystal neutron diffraction”Phys. Rev. B 80, 174424 (2009).
Contact: Yixi Su