Variable temperature crystal structure of Cu.sub.4./sub.TiTe.sub.4./sub.

0574963 - FZÚ 2024 RIV US eng J - Journal Article
Lakshan, A. - Petříček, Václav - Jana, P.P.
Variable temperature crystal structure of Cu₄TiTe₄.
European Journal of Inorganic Chemistry. Roč. 26, č. 24 (2023), č. článku e202300219. ISSN 1434-1948. E-ISSN 1099-0682
Institutional support: RVO:68378271
Keywords : atomic ordering * group-subgroup relations * phase transition * superstructures * twinning
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.3, year: 2022
Method of publishing: Limited access
https://doi.org/10.1002/ejic.202300219

A variable temperature single crystal X-ray diffraction study of the ternary compound, Cu4TiTe4 is reported between 200 – 400 K. The temperature dependent study indicates the compound undergoes an order-disorder phase transition at ~320 K. Below the transition temperature, the phase that crystallizes in the primitive cubic space group, transforms into the two-fold superstructure. It is modeled as a fourfold twinned rhombohedral structure. The transition is reversible. To relate the phases, a group-subgroup symmetry relations are established.
Permanent Link: https://hdl.handle.net/11104/0344854