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@ARTICLE{Lender:1030916,
      author       = {Lender, Theresa and Murphy, Gabriel and Bazarkina, Elena
                      and Bukaemskiy, Andrey and Gilson, Sara and Henkes,
                      Maximilian and Hennig, Christoph and Kaspor, Alexander and
                      Marquardt, Julien and Nießen, Jonas and Peters, Lars and
                      Poonoosamy, Jenna and Rossberg, André and Svitlyk,
                      Volodymyr and Kvashnina, Kristina O. and Huittinen, Nina},
      title        = {{I}nvestigation of {R}adiation {D}amage in the
                      {M}onazite-{T}ype {S}olid {S}olution {L}a 1– x {C}e x {PO}
                      4},
      journal      = {Inorganic chemistry},
      volume       = {63},
      issn         = {0020-1669},
      address      = {Washington, DC},
      publisher    = {American Chemical Society},
      reportid     = {FZJ-2024-05510},
      pages        = {17525-17535},
      year         = {2024},
      abstract     = {Crystalline materials such as monazite have been considered
                      for thestorage of radionuclides due to their favorable
                      radiation stability. Understanding theirstructural chemical
                      response to radiation damage as solid solutions is a key
                      componentof determining their suitability for radionuclide
                      immobilization. Herein, highresolutionstructural studies
                      were performed on ceramics of the monazite solidsolution
                      La1−xCexPO4 (x = 0.25, 0.5, 0.75, 1) in order to
                      understand the role ofstructural chemistry on irradiation
                      stability. Ceramic samples were irradiated with 14MeV Au
                      ions with 1014 ions/cm2 and 1015 ions/cm2 to simulate the
                      recoil of daughternuclei from the alpha decay of actinide
                      radionuclides. The extent of radiation damagewas analyzed in
                      detail using scanning electron microscopy (SEM),
                      Ramanspectroscopy, grazing incidence X-ray diffraction
                      (GI-XRD), and high-energy-resolution fluorescence detection
                      extended X-rayabsorption fine structure (HERFD-EXAFS)
                      spectroscopy. SEM and Raman spectroscopy revealed extensive
                      structural damage aswell as the importance of grain boundary
                      regions, which appear to impede the propagation of defects.
                      Both radiation-inducedamorphization and recrystallization
                      were studied by GI-XRD, highlighting the ability of monazite
                      to remain crystalline at highfluences throughout the solid
                      solution. Both, diffraction and HERFD-EXAFS experiments show
                      that while atomic disorder isincreased in irradiated samples
                      compared to pristine ceramics, the short-range order was
                      found to be largely preserved,
                      facilitatingrecrystallization. However, the extent of
                      recrystallization was found to be dependent on the solid
                      solution composition. Particularly,the samples with uneven
                      ratios of solute cations, La0.75Ce0.25PO4 and
                      La0.25Ce0.75PO4 were observed to exhibit the least
                      apparentradiation damage resistance. The findings of this
                      work are discussed in the context of the monazite solid
                      solution chemistry and theirappropriateness for radionuclide
                      immobilization.},
      cin          = {IFN-2},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IFN-2-20101013},
      pnm          = {1411 - Nuclear Waste Disposal (POF4-141) / BMBF 02NUK060B -
                      Verbundprojekt AcE: Grundlegende Untersuchungen zur
                      Immobilisierung von Actiniden mittels Einbau in
                      endlagerrelevante Festphasen, Teilprojekt B (02NUK060B)},
      pid          = {G:(DE-HGF)POF4-1411 / G:(BMBF)02NUK060B},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {39231923},
      UT           = {WOS:001307691000001},
      doi          = {10.1021/acs.inorgchem.4c02041},
      url          = {https://juser.fz-juelich.de/record/1030916},
}