Incommensurately modulated lanthanide coinage-metal diarsenides. II. GdCuAs2, GdAu1−δAs2 and TbAu1−δAs2 – new distortion variants of the HfCuSi2 type with irregularly stacked zigzag chains of arsenic atoms

Rutzinger, D.; Bartsch, C.; Doert, T.; Ruck, M.

doi:10.1107/S0108768109029565

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

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Figure 6
Fourier maps and difference-Fourier maps for GdCuAs₂ (top) and TbAuAs₂ (bottom); bold lines: calculated atom modulation functions for Gd, Tb (blue), Cu, Au (black), As1 (green) and As2 (red); steps of electron densities 40 e Å⁻³ per line for Gd, Tb, Au, 20 e Å⁻³ per line for Cu, As in the Fourier maps, 0.25 e Å⁻³ per line in the difference-Fourier maps of GdCuAs₂ and 0.5 e Å⁻³ per line in the difference-Fourier maps of TbAuAs₂.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 65| Part 5| August 2009| Pages 527-534

doi:10.1107/S0108768109029565

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