% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Sohn:1005226,
      author       = {Sohn, Yoo Jung and Baran, V. and Gilles, R. and Roth, G.
                      and Vassen, Robert},
      title        = {{C}ombined {X}-ray and {N}eutron {P}owder {D}iffraction
                      {S}tudy on {B}-site {C}ation {O}rdering in {C}omplex
                      {P}erovskite {L}a2({A}l1/2{M}g{T}a1/2){O}6},
      journal      = {Solids},
      volume       = {4},
      number       = {1},
      issn         = {2673-6497},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2023-01374},
      pages        = {87-93},
      year         = {2023},
      abstract     = {Complex perovskite La2(Al1/2MgTa1/2)O6 (LAMT) crystallizes
                      in a monoclinic unit cell with space group P21/n at room
                      temperature. Its B-site cations are ordered in a
                      rock-salt-type arrangement. Previously, the full occupancy
                      of Mg on the 2c-Wyckoff position was deduced from powder
                      X-ray diffraction (PXRD). However, conventional X-rays could
                      not properly resolve the mixed occupation on the B-site,
                      since there is little scattering contrast between the
                      neighbouring elements Mg and Al of the periodic table.
                      Hence, complementary neutron diffraction studies were
                      carried out to verify the exact B-site cation ordering in
                      the unit cell. In this specific configuration of the
                      B-cations, with its occupancy ratio and the presence of a
                      heavy element Ta as well as neighbouring elements Mg and Al,
                      only the strategy of a combined Rietveld analysis using both
                      the X-ray and neutron diffraction data simultaneously
                      succeeded in elucidating an accurate B-site cation ordering
                      in this complex perovskite system. A full occupancy of Mg on
                      the 2c-Wyckoff position and each a half occupancy of Al and
                      Ta on the 2d-Wyckoff position could be resolved for the
                      rock-salt-type ordering of the B-site cations in the
                      monoclinic unit cell of LAMT.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {1241 - Gas turbines (POF4-124)},
      pid          = {G:(DE-HGF)POF4-1241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001114876600001},
      doi          = {10.3390/solids4010006},
      url          = {https://juser.fz-juelich.de/record/1005226},
}