Faculty of Science: Recent submissions
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Low temperature structure and the ferroelectric phase transitions in the CdTiO3 perovskite
Published 2017-01-01The paraelectric-ferroelectric transition in CdTiO3 has been monitored using high resolution neutron diffraction data. This necessitated preparing a sample enriched in 114Cd. A subtle, but significant, anisotropy in the ...Open AccessPreprint -
Thermal Expansion in BaRuO3 Perovskites – an unusual case of bond strengthening at high temperatures
Published 2017-01-01The temperature dependence of the structures of three polytypes of BaRuO3 have been investigated between room temperature and 1000 °C using high resolution Synchrotron X-ray diffraction. The structural studies reveal a ...Open AccessPreprint -
Structure and phase transition in BaThO3: A combined neutron and synchrotron X-ray diffraction study
Published 2017-01-01The 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 ...Open AccessPreprint -
The impact of anion ordering on octahedra distortion and phase transitions in SrTaO2N and BaTaO2N
Published 2017-01-01In this work, we synthesized BaTaO2N and SrTaO2N using a two-step high temperature solid state reaction method and analysed the structural distortions, relative to the ideal cubic perovskite structure, according to group ...Open AccessPreprint -
Multi-scale Structural Analysis of the A-site and Oxygen Deficient Perovskite Sr11Mo4O2
Published 2017-01-01The long range average crystal structure, as well as the short and medium range structural features, of the A-site deficient and oxygen deficient perovskite Sr11Mo4O23 have been determined. Rietveld refinement of synchrotron ...Open AccessPreprint