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@ARTICLE{Biesenkamp:1015305,
      author       = {Biesenkamp, S. and Schmalzl, K. and Becker, P. and Bohatý,
                      L. and Braden, M.},
      title        = {{M}ultiferroic domain relaxation in ( {NH} 4 ) 2 [ {F}e{C}l
                      5 ( {H} 2 {O} ) ]},
      journal      = {Physical review / B},
      volume       = {108},
      number       = {9},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2023-03649},
      pages        = {094417},
      year         = {2023},
      abstract     = {The molecular compound (NH4)2[FeCl5(H2O)] is a type-II
                      multiferroic material, in which incommensurate cycloidal
                      order directly induces ferroelectric polarization. The
                      multiferroic domain kinetics in (NH4)2[FeCl5(H2O)] were
                      studied by time-resolved neutron-diffraction experiments
                      utilizing neutron polarization analysis. The temperature-
                      and electric-field-dependent multiferroic relaxation obeys
                      the simple combined Arrhenius-Merz law, which was reported
                      to describe domain kinetics in the prototype multiferroics
                      TbMnO3 and NaFeGe2O6. However, the characteristic time scale
                      of the multiferroic relaxation is considerably larger than
                      those in TbMnO3 or NaFeGe2O6. Temperature-dependent
                      diffraction on (NH4)2[FeCl5(H2O)] reveals the emergence of
                      higher-order and commensurate magnetic contributions upon
                      cooling in the multiferroic phase in zero field. The good
                      agreement with studies of higher-harmonic contributions in
                      the deuterated material indicates that the isotopes only
                      possess a minor impact on the magnetic ordering. However, in
                      contrast to similar observations in multiferroic MnWO4, this
                      anharmonic modification of magnetic ordering does not depin
                      multiferroic domain walls or alter the temperature
                      dependence of the multiferroic relaxation.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001097117700005},
      doi          = {10.1103/PhysRevB.108.094417},
      url          = {https://juser.fz-juelich.de/record/1015305},
}