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@ARTICLE{Reissner:434577,
      author       = {Reissner, Claudia E. and Bismayer, Ulrich and Kern, Daniel
                      and Reissner, Michael and Park, Sulgiye and Zhang, Jiaming
                      and Ewing, Rodney C. and Shelyug, Anna and Navrotsky,
                      Alexandra and Paulmann, Carsten and Škoda, Radek and Groat,
                      Lee A. and Pöllmann, Herbert and Beirau, Tobias},
      title        = {{M}echanical and structural properties of radiation-damaged
                      allanite-({C}e) and the effects of thermal annealing},
      journal      = {Physics and chemistry of minerals},
      volume       = {46},
      number       = {10},
      issn         = {1432-2021},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {PUBDB-2020-00154},
      pages        = {921 - 933},
      year         = {2019},
      note         = {© Springer-Verlag GmbH Germany},
      abstract     = {The onset of thermally induced, heterogeneous structural
                      reorganization of highly radiation-damaged allanite-(Ce)
                      begins at temperatures below 700 K. Three strongly
                      disordered allanite samples (S74 20414: ~ 0.55 $wt\%$ ThO2,
                      22.1 $wt\%$ REE oxides, and maximum radiation dose 3.5 ×
                      1018 α-decay/g; LB-1: ~1.18 $wt\%$ ThO2, 19.4 $wt\%$ REE
                      oxides, and maximum radiation dose 2.0 × 1019 α-decay/g;
                      R1: ~ 1.6 $wt\%$ ThO2, 19.7 $wt\%$ REE oxides, and maximum
                      radiation dose 2.6 × 1018 α-decay/g) were step-wise
                      annealed to 1000 K in air. Using orientation-dependent
                      nanoindentation, synchrotron single-crystal X-ray
                      diffraction (synchrotron XRD), X-ray powder diffraction
                      (powder XRD), differential scanning calorimetry and
                      thermogravimetric analysis (DSC/TG), mass spectrometry (MS),
                      57Fe Mössbauer spectroscopy and high-resolution
                      transmission electron microscopy (HRTEM), a comprehensive
                      understanding of the structural processes involved in the
                      annealing was obtained. As a result of the overall
                      increasing structural order, a general increase of hardness
                      (pristine samples: 8.2–9.3 GPa, after annealing at
                      1000 K: 10.2–12 GPa) and elastic modulus (pristine
                      samples: 115–127 GPa, after annealing at 1000 K:
                      126–137 GPa) occurred. The initially heterogeneous
                      recrystallization process is accompanied by oxidation of
                      iron, the related loss of hydrogen and induced stress fields
                      in the bulk material, which cause internal and surface
                      cracking after stepwise annealing from 800 to 1000 K. HRTEM
                      imaging of the pristine material shows preserved
                      nanometer-sized crystalline domains embedded in the
                      amorphous matrix, despite the high degree of structural
                      damage. The results show that hardness and elastic modulus
                      are sensitive indicators for the structural reorganization
                      process},
      cin          = {DOOR ; HAS-User / FS-PET-S},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PET-S-20190712},
      pnm          = {6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621)},
      pid          = {G:(DE-HGF)POF3-6213},
      experiment   = {EXP:(DE-H253)D-F1-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000498338600003},
      doi          = {10.1007/s00269-019-01051-z},
      url          = {https://bib-pubdb1.desy.de/record/434577},
}