Br4Eu4I4
Br4Eu4I4 is a semiconducting europium halide that is considered a promising candidate for synthesis due to its favorable thermodynamic stability.
About Br4Eu4I4
Br4Eu4I4 is a complex halide compound featuring europium, bromine, and iodine. As a semiconducting material, it represents an interesting intersection of lanthanide chemistry and halide-based structural frameworks, offering potential for specialized electronic applications.
Its status as a near-hull stable compound suggests that it is a viable target for experimental synthesis. The existence of multiple reported structural variations highlights the flexibility of its atomic arrangement, making it a subject of interest for researchers exploring novel inorganic semiconductor architectures.
Key Properties
Cross-validated computational properties for Br4Eu4I4, 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 Br4Eu4I4, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.97 | 0.0123 | -6.605 | 6.04 |
| No. 0 | unknown | — | — | — | 1.53 |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 1.53 |
Applications
Where Br4Eu4I4 is used.
Frequently Asked Questions
Common questions about Br4Eu4I4, answered from cross-validated data.
What is Br4Eu4I4?
Br4Eu4I4 is a semiconducting europium halide that is considered a promising candidate for synthesis due to its favorable thermodynamic stability.
What is Br4Eu4I4 used for?
What is the band gap of Br4Eu4I4?
Is Br4Eu4I4 a metal, semiconductor, or insulator?
Is Br4Eu4I4 thermodynamically stable?
What is the crystal structure of Br4Eu4I4?
What is the density of Br4Eu4I4?
How many polymorphs of Br4Eu4I4 are known?
What elements does Br4Eu4I4 contain?
Where does the data for Br4Eu4I4 come from?
How It Compares
As a unique halide-based semiconductor, Br4Eu4I4 serves as a distinct entry in the broader landscape of europium halide materials, providing a structural template for investigating how halogen substitution influences the electronic behavior of lanthanide-containing crystals.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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