Cu2Eu2F2Te2
Cu2Eu2F2Te2 is a semiconducting quaternary compound containing copper, europium, fluorine, and tellurium that is considered a viable candidate for experimental synthesis.
About Cu2Eu2F2Te2
Cu2Eu2F2Te2 is a complex quaternary compound composed of copper, europium, fluorine, and tellurium. As a semiconducting material, it sits at the intersection of chalcogenide and fluoride chemistry, offering a unique electronic environment defined by its specific elemental arrangement.
This compound is identified as a near-hull phase, suggesting that it is thermodynamically accessible for synthesis in controlled laboratory environments. Its existence across multiple structural databases highlights its significance as a subject of interest for researchers exploring novel solid-state materials with tunable electronic properties.
Key Properties
Cross-validated computational properties for Cu2Eu2F2Te2, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for Cu2Eu2F2Te2, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P4/nmm (No. 129) | tetragonal | 0.73 | 0.0095 | -6.923 | 7.32 |
| — | — | — | — | — | 7.34 |
| P4/nmm (No. 129) | — | — | — | — | — |
Applications
Where Cu2Eu2F2Te2 is used.
Frequently Asked Questions
Common questions about Cu2Eu2F2Te2, answered from cross-validated data.
What is Cu2Eu2F2Te2?
Cu2Eu2F2Te2 is a semiconducting quaternary compound containing copper, europium, fluorine, and tellurium that is considered a viable candidate for experimental synthesis.
What is Cu2Eu2F2Te2 used for?
What is the band gap of Cu2Eu2F2Te2?
Is Cu2Eu2F2Te2 a metal, semiconductor, or insulator?
Is Cu2Eu2F2Te2 thermodynamically stable?
What is the crystal structure of Cu2Eu2F2Te2?
What is the density of Cu2Eu2F2Te2?
How many polymorphs of Cu2Eu2F2Te2 are known?
What elements does Cu2Eu2F2Te2 contain?
Where does the data for Cu2Eu2F2Te2 come from?
How It Compares
As a unique quaternary phase, Cu2Eu2F2Te2 represents a specialized entry in the landscape of complex tellurides and fluorides. While it currently stands as a distinct composition without a broad family of direct structural siblings in this context, it serves as a critical benchmark for investigating how the integration of rare-earth elements and chalcogens influences semiconducting behavior in multi-component systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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