The magnetic structures of YMnO 3−δ and HoMnO 3

摘要: The Mn spin structures of the hexagonal RMnO3 form homometric, i.e. indistinguishable, pairs in neutron diffraction if then site parameter x (x,0,0) is exactly 1/3. We solve problem for HoMnO3 and YMnO3-δ neutron-diffraction data when deviates slightly from In Ho spins are long-range-ordered below 32.5 K Mn/Ho structure shows a re-orientational transition at ∼6 K, which implies 16% increase sublattice magnetization.