KSm(MoO4)2, an incommensurately modulated and partially disordered scheelite-like structure

Arakcheeva, A.; Pattison, P.; Chapuis, G.; Rossell, M.; Filaretov, A.; Morozov, V.; Van Tendeloo, G.

doi:10.1107/S0108768108001870

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 9
A portion of the KSm(MoO₄)₂ aperiodic structure in the ab projection. The green and yellow spheres indicate A = (K_1-xSm_x) positions for x < 0.5 and x > 0.5, respectively. The [MoO₄] tetrahedra are represented by their edges. The grey and white wave indicates the continuously changing chemical composition from mainly {K[MoO₄]} (centre of the grey part) to mainly {Sm[MoO₄]} (centre of the white part). The direction and length of this wave (arrow) is parallel to the q vector with length 1/|q|. Darker spheres indicate mainly K (x < 0.01) and mainly Sm (x > 0.99) A positions. The a and b unit-cell translations are indicated for the A site by dashed lines.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 64| Part 2| March 2008| Pages 160-171

doi:10.1107/S0108768108001870

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