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@ARTICLE{Leys:907661,
      author       = {Leys, Julia M. and Ji, Yaqi and Klinkenberg, Martina and
                      Kowalski, Piotr M. and Schlenz, Hartmut and Neumeier, Stefan
                      and Bosbach, Dirk and Deissmann, Guido},
      title        = {{M}onazite-type {S}m{PO}4 as potential nuclear waste form:
                      {I}nsights into radiation effects from ion-beam irradiation
                      and atomistic simulations},
      journal      = {Materials},
      volume       = {15},
      number       = {10},
      issn         = {1996-1944},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2022-02140},
      pages        = {3434},
      year         = {2022},
      abstract     = {Single-phase monazite-type ceramics are considered as
                      potential host matrices for the conditioning of separated
                      plutonium and minor actinides. Sm-orthophosphates were
                      synthesised andtheir behaviour under irradiation was
                      investigated with respect to their long-term performance in
                      the repository environment. Sintered SmPO4 pellets and thin
                      lamellae were irradiated with 1, 3.5,and 7 MeV Au ions, up
                      to fluences of 5.1 × 1014 ions cm−2 to simulate ballistic
                      effects of recoiling nuclei resulting from α-decay of
                      incorporated actinides. Threshold displacement energies for
                      monazite-type SmPO4 subsequently used in SRIM/TRIM
                      simulations were derived from atomistic simulations. Raman
                      spectra obtained from irradiated lamellae revealed vast
                      amorphisation at the highestfluence used, although local
                      annealing effects were observed. The broadened, but still
                      discernible, band of the symmetrical stretching vibration in
                      SmPO4 and the negligible increase in P–O bondlengths
                      suggest that amorphisation of monazite is mainly due to a
                      breaking of Ln–O bonds. PO4 groups show structural
                      disorder in the local environment but seem to behave as
                      tight units. Annealingeffects observed during the
                      irradiation experiment and the distinctively lower dose
                      rates incurred in actinide bearing waste forms and potential
                      α-radiation-induced annealing effects indicatethat
                      SmPO4-based waste forms have a high potential for
                      withstanding amorphisation.},
      cin          = {IEK-6 / IEK-13},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-6-20101013 / I:(DE-Juel1)IEK-13-20190226},
      pnm          = {1411 - Nuclear Waste Disposal (POF4-141) / 1221 -
                      Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1411 / G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {35629458},
      UT           = {WOS:000802681700001},
      doi          = {10.3390/ma15103434},
      url          = {https://juser.fz-juelich.de/record/907661},
}