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Twofold superstructure of TiOBr at T = 17.5 K

What is it about?

The low-temperature structure of titanium(III) oxybromide is reported as a twofold superstructure of the crystal structure at room temperature. Structure refinements and analysis were carried out within the higher-dimensional superspace approach.

Why is it important?

Both the low-temperature and the room-temperature structures of TiOBr are isostructural with the corresponding structures of TiOCl. The results indicate that at low temperatures TiOBr is in a spin-Peierls state, similar to that of TiOCl, but with the modulations and relevant interactions smaller than in the latter compound.

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The following have contributed to this page:
Andreas Schönleber and Lukas Palatinus
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