Monoclinic superstructure in orthorhombic Ce10W22O81 from transmission electron microscopy. Issue 2 (17th March 2014)

• Record Type: Journal Article
• Authors: Patout, Loïc; Jacob, Damien; Arab, Madjid; Pereira de Souza, Carlson; Leroux, Christine
• Is Part Of: Acta crystallographica. Volume 70:Issue 2(2014:Apr.)
• Page Start: 268
• Page End: 274
• Publication Date: 2014-03-17
• DOI: 10.1107/S2052520613034252
• Languages: English
• ISSNs: 2052-5206

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A complex rare‐earth tungstate structure, present in a two‐phased powder, was solved by electron diffraction, precession and high‐resolution electron microscopy. The orthorhombic space group <italic>Pbnm</italic> and the atomic positions deduced from X‐ray diffraction experiments were confirmed for Ce₁₀W₂₂O₈₁. A <italic>C</italic>2/<italic>c</italic> monoclinic superstructure, with cell parameters <italic>a</italic> = 7.8, <italic>b</italic> = 36.1, <italic>c</italic> = 22.2 Å and β = 100.2°, was shown and attributed to a partial oxidation of Ce³⁺ leading to interstitial oxygen ions.</p> </abstract>