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2013 | 124 | 6 | 1002-1004
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Magnetic Structures of Ho_5Rh_4Ge_{10}

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A powder diffraction measurement of Ho_5Rh_4Ge_{10} is reported. This compound crystallizes in the tetragonal Sc_5Co_4Si_{10}-type structure (space group P4/mbm) in which the Ho atoms occupy three different sites. The neutron diffraction measurements indicate antiferromagnetic order with the Néel temperature T_{N}=7 K. Below T_{N} an additional phase transition at 4.5 K connected with the change of the magnetic structure is observed. The Ho moments in 4(h) site form collinear order up to T_{N} while moments at 2(a) site form sine modulated structure. Determined experimentally magnetic structures are compared to the results of symmetry analysis.
  • Institute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland
  • Institute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland
  • Forschungsneutronenquelle Heinz Maier-Leibnitz (FRMII), Technische Universität Munchen, 85747 Garching, Germany
  • AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. A. Mickiewicza 30, 30-059 Krakow, Poland
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