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@ARTICLE{Heidelmann:173076,
      author       = {Heidelmann, Markus and Heggen, Marc and Feuerbacher,
                      Michael},
      title        = {{O}n the stability of metadislocations with 16 associated
                      phason planes},
      journal      = {Intermetallics},
      volume       = {53},
      issn         = {0966-9795},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2014-06489},
      pages        = {187 - 191},
      year         = {2014},
      abstract     = {High-resolution scanning transmission electron microscopy
                      was used to investigate the core structure of a
                      metadislocation in a plastically deformed sample of the
                      complex metallic alloy ε 6-Al–Pd–Mn. The atomic-level
                      characterization of a metadislocation with 16 associated
                      phason planes showed dissociation into metadislocations with
                      6 and 10 phason planes. A structural model of the
                      dissociated core region was developed. The Burgers vector of
                      the dislocation View the MathML sourceb→16 = −0.07 nm
                      [001] splits up into View the MathML sourceb→6 = −0.183
                      nm [001] and View the MathML sourceb→10 = 0.113 nm [001]
                      increasing the strain at the metadislocation cores. Although
                      unfavourable with respect to an increasing elastic strain
                      energy the dissociation is realized due to a decrease in
                      fault-plane energy. The latter arises from a size reduction
                      of the ξ-phase area that is required to accommodate the
                      metadislocation in the structure. A careful inspection of
                      several exemplary metadislocations with 16 phason planes
                      using electron microscopy indicates their dissociated
                      structure which casts doubt on the stability of elementary
                      metadislocations with 16 phason planes. The study includes a
                      detailed analysis of the structure of a metadislocation core
                      with 6 associated phason planes.},
      cin          = {PGI-5},
      ddc          = {660},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {424 - Exploratory materials and phenomena (POF2-424)},
      pid          = {G:(DE-HGF)POF2-424},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000338818000024},
      doi          = {10.1016/j.intermet.2014.05.005},
      url          = {https://juser.fz-juelich.de/record/173076},
}