Monoclinic superstructure in the orthorhombic Ce10W22O81 from transmission electron microscopy - Archive ouverte HAL Access content directly
Journal Articles Acta crystallographica Section B: Structural crystallography and crystal chemistry Year : 2014

Monoclinic superstructure in the orthorhombic Ce10W22O81 from transmission electron microscopy

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Abstract

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 Pbnm and the atomic positions deduced from X-rays diffraction experiments were confirmed for Ce10W22O81. A C2/c monoclinic superstructure, with cell parameters a = 7.8 Å, b = 36.1 Å, c = 22.2 Å and β = 100.2°, was evidenced and attributed to a partial oxidation of Ce3+ leading to interstitial oxygen ions.
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hal-01053691 , version 1 (01-08-2014)

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L. Patout, D. Jacob, Madjid Arab, Carlson Pereira de Souza, Christine Leroux. Monoclinic superstructure in the orthorhombic Ce10W22O81 from transmission electron microscopy. Acta crystallographica Section B: Structural crystallography and crystal chemistry, 2014, 70, pp.268. ⟨10.1107/S2052520613034252⟩. ⟨hal-01053691⟩
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