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@ARTICLE{Kawaguchi:429933,
      author       = {Kawaguchi, Tomoya and Keller, Thomas F. and Runge, Henning
                      and Gelisio, Luca and Seitz, Christoph and Kim, Young Yong
                      and Maxey, Evan R. and Cha, Wonsuk and Ulvestad, Andrew and
                      Hruszkewycz, Stephan O. and Harder, Ross and Vartanyants,
                      Ivan A. and Stierle, Andreas and You, Hoydoo},
      title        = {{G}as-{I}nduced {S}egregation in {P}t-{R}h {A}lloy
                      {N}anoparticles {O}bserved by {I}n {S}itu {B}ragg
                      {C}oherent {D}iffraction {I}maging},
      journal      = {Physical review letters},
      volume       = {123},
      number       = {24},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PUBDB-2019-05420},
      pages        = {246001},
      year         = {2019},
      note         = {© American Physical Society},
      abstract     = {Bimetallic catalysts can undergo segregation or
                      redistribution of the metals driven by oxidizing andreducing
                      environments. Bragg coherent diffraction imaging (BCDI) was
                      used to relate displacement fieldsto compositional
                      distributions in crystalline Pt-Rh alloy nanoparticles.
                      Three-dimensional images ofinternal composition showed that
                      the radial distribution of compositions reverses partially
                      between thesurface shell and the core when gas flow changes
                      between O2 and H2. Our observation suggests that
                      theelemental segregation of nanoparticle catalysts should be
                      highly active during heterogeneous catalysis andcan be a
                      controlling factor in synthesis of electrocatalysts. In
                      addition, our study exemplifies applications ofBCDI for in
                      situ 3D imaging of internal equilibrium compositions in
                      other bimetallic alloy nanoparticles.},
      cin          = {FS-NL / FS-PS / DOOR ; HAS-User},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-NL-20120731 / I:(DE-H253)FS-PS-20131107 /
                      I:(DE-H253)HAS-User-20120731},
      pnm          = {6214 - Nanoscience and Materials for Information Technology
                      (POF3-621) / $NFFA-Europe_supported$ - Technically supported
                      by Nanoscience Foundries and Fine Analysis Europe
                      $(2020_Join2-NFFA-Europe_funded)$ / NFFA-Europe -
                      NANOSCIENCE FOUNDRIES AND FINE ANALYSIS - EUROPE (654360)},
      pid          = {G:(DE-HGF)POF3-6214 /
                      $G:(DE-HGF)2020_Join2-NFFA-Europe_funded$ /
                      G:(EU-Grant)654360},
      experiment   = {EXP:(DE-H253)Nanolab-04-20150101 /
                      EXP:(DE-H253)Nanolab-01-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31922849},
      UT           = {WOS:000502798200014},
      doi          = {10.1103/PhysRevLett.123.246001},
      url          = {https://bib-pubdb1.desy.de/record/429933},
}