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@ARTICLE{Sazonov:865103,
      author       = {Sazonov, Andrew and Hutanu, Vladimir and Meven, Martin and
                      Röwer, Karine and Roth, Georg and Lelièvre-Berna, Eddy and
                      Fuchs, Günther and Zaharko, Oksana and Friese, Karen},
      title        = {{U}nambiguous determination of the commensurate
                      antiferromagnetic structure of {H}o{N}i 2 {B} 2 {C} in the
                      superconducting ground state},
      journal      = {Physical review / B},
      volume       = {100},
      number       = {1},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-04659},
      pages        = {014414},
      year         = {2019},
      abstract     = {Crystal and magnetic structures of the intermetallic
                      HoNi2B2C have been investigated using different
                      single-crystal diffraction techniques at both room and low
                      temperatures (superconducting phase). Combined refinement of
                      the neutron and x-ray diffraction data performed at room
                      temperature shows that the crystal structure of HoNi2B2C is
                      well described in the tetragonal space group I4/mmm, in
                      agreement with the literature. The magnetic ordering at low
                      temperatures is accompanied by a structural phase transition
                      to the orthorhombic space group Fmmm. However, only
                      noncharacteristic orbits are occupied in this space group,
                      and the symmetry reduction is entirely due to a lifting of
                      the symmetry-induced restrictions on the anisotropic
                      displacement parameters. Based on magnetic symmetry
                      analysis, two types of commensurate antiferromagnetic
                      structures with different magnetic space groups (MSGs) are
                      found below TN≈5.2 K: MSG PInnm (Ho spins are along the
                      [100] direction of the parent structure) and MSG CAmca (Ho
                      spins are along [110] of the parent structure). Both models
                      agree well with conventional unpolarized neutron diffraction
                      data at low temperature (2.4 K) with ordered magnetic
                      moments of 9.16(9) μB/Ho3+ atom. Spherical neutron
                      polarimetry, on the other hand, allowed us to unambiguously
                      solve the magnetic structure (MSG CAmca) as well as to
                      determine the population of two types of 90∘
                      antiferromagnetic domains (0.45/0.55).},
      cin          = {JCNS-FRM-II / MLZ / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {524 - Controlling Collective States (POF3-524) / 6212 -
                      Quantum Condensed Matter: Magnetism, Superconductivity
                      (POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich
                      Centre for Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-524 / G:(DE-HGF)POF3-6212 /
                      G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)HEIDI-20140101 /
                      EXP:(DE-MLZ)POLI-HEIDI-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000475496800002},
      doi          = {10.1103/PhysRevB.100.014414},
      url          = {https://juser.fz-juelich.de/record/865103},
}