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@ARTICLE{Zkutn:873861,
      author       = {Zákutná, D. and Alemayehu, A. and Vlček, J. and
                      Nemkovski, K. and Grams, C. P. and Nižňanský, D. and
                      Honecker, D. and Disch, S.},
      title        = {{C}ritical size limits for collinear and spin-spiral
                      magnetism in {C}o{C}r$_2${O}$_4$},
      journal      = {Physical review / B},
      volume       = {100},
      number       = {18},
      issn         = {0163-1829},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2020-01053},
      pages        = {184427},
      year         = {2019},
      abstract     = {The multiferroic behavior of CoCr2O4 results from the
                      appearance of conical spin-spiral magnetic ordering, which
                      induces electric polarization. The magnetic ground state has
                      a complex size-dependent behavior, which collapses when
                      reaching a critical particle size. Here the magnetic phase
                      stability of CoCr2O4 in the size range of 3.6–14.0 nm is
                      presented in detail using the combination of neutron
                      diffraction with XYZ polarization analysis and macroscopic
                      magnetization measurements. We establish critical coherent
                      domain sizes for the formation of the spin spiral and
                      ferrimagnetic structure and reveal the evolution of the
                      incommensurate spin spiral vector with particle size. We
                      further confirm the presence of ferroelectric polarization
                      in the spin spiral phase for nanocrystalline CoCr2O4.},
      cin          = {JCNS-FRM-II / JCNS-2 / MLZ},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)DNS-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000498849400009},
      doi          = {10.1103/PhysRevB.100.184427},
      url          = {https://juser.fz-juelich.de/record/873861},
}