Commensurate Dy magnetic ordering associated with incommensurate lattice distortion in multiferroic DyMnO3
نویسندگان
چکیده
N = 5 K, the Dy magnetic moments order in a commensurate structure with propagation vector 0.5 b∗. Simultaneous with the Dy magnetic ordering, an incommensurate lattice modulation with propagation vector 0.905 b∗ evolves while the original Mn induced modulation is suppressed and shifts from 0.78 b∗ to 0.81 b∗. This points to a strong interference of Mn and Dy induced structural distortions in DyMnO3 besides a magnetic coupling between the Mn and Dy magnetic moments.
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