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@ARTICLE{Leu:201679,
      author       = {Leu, Lii-Cherng and Bian, Jianjiang and Gout, Delphine and
                      Letourneau, Steve and Ubic, Rick},
      title        = {{O}rder–disorder transition in the (1−x){L}i $_{2}$
                      {T}i{O} $_{3}$ –x{M}g{O} system (0 ≤ x ≤ 0.5)},
      journal      = {RSC Advances},
      volume       = {2},
      number       = {4},
      issn         = {2046-2069},
      address      = {London},
      publisher    = {RSC Publishing},
      reportid     = {FZJ-2015-03973},
      pages        = {1598 - 1604},
      year         = {2012},
      abstract     = {The order–disorder phase transition of magnesium lithium
                      titanate solid–solution (1−x)Li2TiO3–xMgO (0 ≤ x ≤
                      0.5) ceramics prepared by conventional solid-state
                      processing has been examined. The phase and structural
                      analysis was carried out using electron diffraction, neutron
                      diffraction and high-resolution transmission electron
                      microscopy. Both electron and neutron diffraction results
                      revealed the onset of an order-to-disorder transition at 0.3
                      < x < 0.4. Superlattice reflections found in certain regions
                      of x = 0.2 samples and most areas of x = 0.3 samples were
                      caused by a twin structure stabilized by Mg incorporation.
                      Rietveld refinements of neutron diffraction data suggested a
                      random distribution of Mg on the Li 4e sites and equal
                      distribution of Mg on the two Ti 4e sites for x ≤ 0.3. As
                      the Mg content continues to increase, the crystal symmetry
                      transforms from monoclinic to cubic rocksalt. Consequently,
                      the cation ordering on the 8f and 4d sites of the C2/c
                      structure became corrupted and turned into short-range
                      ordering on the 4a sites of a cubic structure with Image
                      ID:c1ra00677k-t1.gif symmetry, resulting in diffuse
                      scattering in electron diffraction patterns.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
                      (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000299695300052},
      doi          = {10.1039/C1RA00677K},
      url          = {https://juser.fz-juelich.de/record/201679},
}