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@ARTICLE{Ovsianikov:903909,
      author       = {Ovsianikov, Aleksandr and Thoma, Henrik and Usmanov, Oleg
                      and Brown, Penelope Jane and Chatterji, Tapan and Sazonov,
                      Andrew and Barilo, Sergey and Peters, Lars and Hutanu,
                      Vladimir},
      title        = {{B}reaking the magnetic symmetry by reorientation
                      transition near 50 {K} in multiferroic magnetocaloric
                      {H}o{F}e{O}3},
      journal      = {IEEE transactions on magnetics},
      volume       = {58},
      number       = {2},
      issn         = {0018-9464},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {FZJ-2021-05533},
      pages        = {2500105},
      year         = {2022},
      abstract     = {Using the new polarized neutron diffraction (PND) setup at
                      MLZ the spin reorientation transition in the magnetocaloric
                      orthoferrite HoFeO3 was studied at different wavelength. The
                      various experiments provided reproducible results
                      demonstrating high reliability of the used setup. We show
                      that during the phase transition at TSR=53 K in an external
                      magnetic field applied along crystal c-axis, the ordered
                      magnetic moment of the Fe sublattice rotates from the
                      crystallographic direction b to a not just in the ab plane,
                      but through z axis. This means that the applied field breaks
                      the orthorhombic symmetry allowing some magnetization
                      parallel to z within a short temperature region.
                      Interestingly, this is the same temperature region where
                      large magnetocaloric effect for HoFeO3 was previously
                      reported. A general model of the magnetic structure of
                      HoFeO3, unconstrained by the orthorhombic symmetry, would
                      allow the magnitudes and directions of the moments on each
                      of the 8 magnetic sublattices in the unit cell to be
                      independent of one-another, leading to 24 independent
                      magnetic parameters. PND measurements were used to determine
                      the absolute sign of the Dzyaloshinskii-Moriya interaction
                      (DMI) in the ab plane for the Fe magnetic sublattice at 65
                      K. DMI plays an important role in the energy balance of the
                      system.},
      cin          = {JCNS-FRM-II / JCNS-4 / JARA-FIT / MLZ},
      ddc          = {620},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-4-20201012 / $I:(DE-82)080009_20140620$ /
                      I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)POLI-HEIDI-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000745538100062},
      doi          = {10.1109/TMAG.2021.3082324},
      url          = {https://juser.fz-juelich.de/record/903909},
}