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@ARTICLE{Paszkowicz:399006,
      author       = {Paszkowicz, Wojciech and Shekhovtsov, Alexei and Kosmyna,
                      Miron and Loiko, Pavel and Vilejshikova, Elena and
                      Minikayev, Roman and Romanowski, Przemysław and
                      Wierzchowski, Wojciech and Wieteska, Krzysztof and Paulmann,
                      Carsten and Bryleva, Ekaterina and Belikov, Konstantin and
                      Fitch, Andrew},
      title        = {{S}tructure and thermal expansion of
                      $\mathrm{{C}a_{9}{G}d({VO}_{4})_{7}}$: {A} combined
                      powder-diffraction and dilatometric study of a
                      {C}zochralski-grown crystal},
      journal      = {Nuclear instruments $\&$ methods in physics research / B},
      volume       = {411},
      issn         = {0168-583X},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2018-00323},
      pages        = {100 - 111},
      year         = {2017},
      note         = {(c) Elsevier B.V. ; Post referee fulltext in progress;
                      Embargo 12 months from publication},
      abstract     = {Materials of the Ca$_9$RE(VO$_4$)$_7$ (CRVO) formula (RE =
                      rare earth) and whitlockite-related structures are
                      considered for applications in optoelectronics, e.g., in
                      white-light emitting diodes and lasers. In the CRVO
                      structure, the RE atoms are known to share the site
                      occupation with Ca atoms at two or three among four Ca
                      sites, with partial occupancy values depending on the choice
                      of the RE atom. In this work, the structure and quality of a
                      Czochralski-grown crystal of this family,
                      Ca$_9$Gd(VO$_4$)$_7$ (CGVO), are studied using X-ray
                      diffraction methods. The room-temperature structure is
                      refined using the powder diffraction data collected at a
                      high-resolution synchrotron beamline ID22 (ESRF, Grenoble);
                      for comparison purposes, a laboratory diffraction pattern
                      was collected and analyzed, as well. The site occupancies
                      are discussed on the basis of comparison with literature
                      data of isostructural synthetic crystals of the CRVO series.
                      The results confirm the previously reported site-occupation
                      scheme and indicate a tendency of the CGVO compound to adopt
                      a Gd-deficient composition. Moreover, the thermal expansion
                      coefficient is determined for CGVO as a function of
                      temperature in the 302–1023 K range using laboratory
                      diffraction data. Additionally, for CGVO and six other
                      single crystals of the same family, thermal expansion is
                      studied in the 298–473 K range, using the dilatometric
                      data. The magnitude and anisotropy of thermal expansion,
                      being of importance for laser applications, are discussed
                      for these materials.},
      cin          = {FS-PEX},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-PEX-20130206},
      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:000415772700018},
      doi          = {10.1016/j.nimb.2017.07.026},
      url          = {https://bib-pubdb1.desy.de/record/399006},
}