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@ARTICLE{Klobes:173154,
      author       = {Klobes, B. and Bessas, D. and Juranyi, F. and Görlitz, H.
                      and Pacheco, V. and Hermann, Raphael},
      title        = {{E}ffect of nanocrystallinity on lattice dynamics in {B}i
                      $_{2}$ {T}e $_{3}$ based thermoelectrics},
      journal      = {Physica status solidi / Rapid research letters},
      volume       = {9},
      number       = {1},
      issn         = {1862-6254},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2014-06567},
      pages        = {57–61},
      year         = {2015},
      abstract     = {The lattice dynamics in as-cast and nanocrystalline
                      thermoelectric Bi2Te3 based p-type and n-type material were
                      investigated using inelastic neutron scattering. Generalized
                      densities of phonon states show substantial agreement
                      between the lattice dynamics in as-cast samples and previous
                      studies. The lattice dynamics in the nanocrystalline
                      materials differ significantly from its as-cast counterparts
                      in the acoustic phonon regime. In nanocrystalline p-type and
                      n-type compounds, the average acoustic phonon group velocity
                      was found to be reduced to $80(5)\%$ and $95(2)\%$ of the
                      value in as-cast material. It is argued that point-defect
                      and strain contrast scattering may play an important role
                      for the understanding of lattice thermal conductivity in
                      (nanocrystalline) Bi2Te3 based thermoelectrics beside the
                      observed decrease of sound velocity},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {144 - Controlling Collective States (POF3-144) / 524 -
                      Controlling Collective States (POF3-524) / 6213 - Materials
                      and Processes for Energy and Transport Technologies
                      (POF3-621) / 6G4 - Jülich Centre for Neutron Research
                      (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
                      G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000348763500009},
      doi          = {10.1002/pssr.201409479},
      url          = {https://juser.fz-juelich.de/record/173154},
}