Synthesis, crystal structure and structure–property relations of strontium orthocarbonate, Sr2CO4

Laniel, D.; Binck, J.; Winkler, B.; Vogel, S.; Fedotenko, T.; Chariton, S.; Prakapenka, V.; Milman, V.; Schnick, W.; Dubrovinsky, L.; Dubrovinskaia, N.

doi:10.1107/S2052520620016650

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

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Figure 6
Displacement patterns in typical Raman modes of Sr₂CO₄ at 20 GPa. Arrows indicate the displacement of the atoms during the specific vibration. Low-frequency modes [e.g. (a)] are dominated by relative motions of the CO₄ groups against the Sr ions. Intermediate frequencies [e.g. (b)] are mainly due to displacements/rotations of the CO₄ groups, while the Sr ions are at rest. Raman shifts > 500 cm⁻¹ [(c), (d) and (e)] are due to various bending and stretching vibrations in the CO₄ groups, while the Sr ions are at rest.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 77| Part 1| February 2021| Pages 131-137

https://doi.org/10.1107/S2052520620016650

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