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@ARTICLE{Chatterji:840618,
      author       = {Chatterji, T. and Meven, M. and Brown, P. J.},
      title        = {{T}emperature evolution of magnetic structure of
                      {H}o{F}e{O}3 by single crystal neutron diffraction},
      journal      = {AIP Advances},
      volume       = {7},
      number       = {4},
      issn         = {2158-3226},
      address      = {New York, NY},
      publisher    = {American Inst. of Physics},
      reportid     = {FZJ-2017-08123},
      pages        = {045106 -},
      year         = {2017},
      abstract     = {We have investigated the temperature evolution of the
                      magnetic structures of HoFeO3 by single crystal neutron
                      diffraction. The three different magnetic structures
                      werevfound as a function of temperature for HoFeO3. In all
                      three phases the fundamental coupling between the Fe
                      sub-lattices remains the same and only their orientation and
                      the degree of canting away from the ideal axial direction
                      varies. The magnetic polarisation of the Ho sub-lattices in
                      these two higher temperature regions, in which the major
                      components of the Fe moment lie along x and y, is very
                      small. The canting of the moments from the axial directions
                      is attributed to the antisymmetric interactions allowed by
                      the crystal symmetry. In the low temperature phase two
                      further structural transitions are apparent in which the
                      spontaneous magnetisation changes sign with respect to the
                      underlying antiferromagnetic configuration. In this
                      temperature range the antisymmetric exchange energy varies
                      rapidly as the the Ho sub-lattices begin to order. So long
                      as the ordered Ho moments are small the antisymmetric
                      exchange is due only to Fe-Fe interactions, but as the
                      degree of Ho order increases the Fe-Ho interactions take
                      over whilst at the lowest temperatures, when the Ho moments
                      approach saturation the Ho-Ho interactions dominate. The
                      reversals of the spontaneous magnetisation found in this
                      study suggest that in HoFeO3 the sums of the Fe-Fe and Ho-Ho
                      antisymmetric interactions have the same sign as one
                      another, but that of the Ho-Fe terms is opposite.},
      cin          = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
                      (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)HEIDI-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000400396100027},
      doi          = {10.1063/1.4979710},
      url          = {https://juser.fz-juelich.de/record/840618},
}