Tuning of magnetism in DyMn1−xFexO3 (x<0.1) system by iron substitution

The effect of Fe doping on the magnetism of DyMn_1-xFe_xO₃ (xN of the Mn sublattice decreases from 38 K (x = 0) to 33 K (x = 0.1), T_S = 17.9 K (x = 0) connected with the transition of Mn-spins into the cycloidal magnetic phase decreases to 15.9 K (x = 0.01) and vanishes for higher x concentrations, while the ordering temperature of the Dy sublattice varies between 5.9 K (x = 0.01) and 4.1 K (x = 0.02). These results indicate the ground state magnetic structure of DyMnO₃ can be destabilized, and the multiferroicity is completely suppressed by very low Fe doping. Similar effects were previously observed in the multiferroic TbMn_1-xFe_xO₃ system.