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@ARTICLE{Murphy:837116,
      author       = {Murphy, Gabriel L. and Kennedy, Brendan J. and Zhang,
                      Zhaoming and Avdeev, Maxim and Brand, Helen E. A. and
                      Kegler, Philip and Alekseev, Evgeny},
      title        = {{S}tructure and phase transition in {B}a{T}h{O} 3 : {A}
                      combined neutron and synchrotron {X}-ray diffraction study},
      journal      = {Journal of alloys and compounds},
      volume       = {727},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {FZJ-2017-06105},
      pages        = {1044-1049},
      year         = {2017},
      abstract     = {The structure of BaThO3, obtained by solid state synthesis,
                      was refined for the first time by the Rietveld method using
                      a combination of synchrotron X-ray and neutron powder
                      diffraction data. BaThO3 has an orthorhombic structure at
                      room temperature, in space group Pbnm with a = 6.3491(5), b
                      = 6.3796(4) and c = 8.9907(7) Å. Heating BaThO3 to above
                      700 °C results in a continuous transition to a second
                      orthorhombic structure, in space group Ibmm, demonstrated by
                      both in situ neutron and synchrotron X-ray powder
                      diffraction measurements. The coefficient of volumetric
                      thermal expansion for BaThO3 is determined to be 1.04 ×
                      10−5 °C-1 from 50 to 625 °C (Pbnm phase), and 9.43 ×
                      10−6 °C-1 from 800 to 1000 °C (Ibmm phase). BaThO3 was
                      found to decompose upon exposure to atmospheric moisture
                      resulting in the formation of ThO2. The thermal expansion of
                      ThO2, which invariably co-exists with BaThO3, is also
                      described.},
      cin          = {IEK-6},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-6-20101013},
      pnm          = {161 - Nuclear Waste Management (POF3-161) / Helmholtz Young
                      Investigators Group: Energy (HGF-YIG-Energy)},
      pid          = {G:(DE-HGF)POF3-161 / G:(DE-HGF)HGF-YIG-Energy},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000412712900124},
      doi          = {10.1016/j.jallcom.2017.08.200},
      url          = {https://juser.fz-juelich.de/record/837116},
}