The CuZrSe2 compound was synthesized for the first time by intercalation of Cu into the ZrSe2 lattice at room temperature. Experimental study of the thermal stability of CuZrSe2 has been performed by in-situ temperature-dependent synchrotron radiation X-ray diffraction (SR-XRPD). CuZrSe2 has a layered structure with space group P 3 m1. The copper atoms at room temperature in the interlayer space are octa-and tetrahedrally coordinated by selenium. Heating leads the decomposition of the main layered phase into binary copper chalcogenides and zirconium trichalcogenide as previously shown for CuxZrTe2. With the increase in temperature the octahedral sites in main layered phase become empty, copper atoms occupy the tetrahedral sites only. Thus, the high-temperature form of CuZrSe2 has a delafossite-like structure.
Shkvarina, E.g., Shkvarin, A.s., Titov, A.a., Postnikov, M.s., Plaisier, J.r., Gigli, L., et al. (2023). Thermal stability of the CuZrSe2. JOURNAL OF SOLID STATE CHEMISTRY, 328 [10.1016/j.jssc.2023.124307].
Thermal stability of the CuZrSe2
Gaboardi M.;
2023-01-01
Abstract
The CuZrSe2 compound was synthesized for the first time by intercalation of Cu into the ZrSe2 lattice at room temperature. Experimental study of the thermal stability of CuZrSe2 has been performed by in-situ temperature-dependent synchrotron radiation X-ray diffraction (SR-XRPD). CuZrSe2 has a layered structure with space group P 3 m1. The copper atoms at room temperature in the interlayer space are octa-and tetrahedrally coordinated by selenium. Heating leads the decomposition of the main layered phase into binary copper chalcogenides and zirconium trichalcogenide as previously shown for CuxZrTe2. With the increase in temperature the octahedral sites in main layered phase become empty, copper atoms occupy the tetrahedral sites only. Thus, the high-temperature form of CuZrSe2 has a delafossite-like structure.| File | Dimensione | Formato | |
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