Eu4O16S4
Eu4O16S4 is a thermodynamically stable semiconducting oxysulfide compound composed of europium, oxygen, and sulfur.
About Eu4O16S4
Eu4O16S4 is a complex oxysulfide compound that exhibits semiconducting electronic behavior. As a thermodynamically stable phase located on the convex hull, it represents a robust structural arrangement of europium, oxygen, and sulfur atoms that is of significant interest for fundamental solid-state studies.
This material is characterized by its distinct chemical composition, which balances the electronegativity of oxygen and sulfur within the europium coordination environment. Its stability suggests potential utility in specialized electronic or optical applications where stable, semiconducting inorganic frameworks are required.
Key Properties
Cross-validated computational properties for Eu4O16S4, 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 Eu4O16S4, 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 | 1.07 | 0.0000 | -8.312 | 5.39 |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | — | — | — | — | — |
Applications
Where Eu4O16S4 is used.
Frequently Asked Questions
Common questions about Eu4O16S4, answered from cross-validated data.
What is Eu4O16S4?
Eu4O16S4 is a thermodynamically stable semiconducting oxysulfide compound composed of europium, oxygen, and sulfur.
What is Eu4O16S4 used for?
What is the band gap of Eu4O16S4?
Is Eu4O16S4 a metal, semiconductor, or insulator?
Is Eu4O16S4 thermodynamically stable?
What is the crystal structure of Eu4O16S4?
What is the density of Eu4O16S4?
How many polymorphs of Eu4O16S4 are known?
What elements does Eu4O16S4 contain?
Where does the data for Eu4O16S4 come from?
How It Compares
As a unique oxysulfide, Eu4O16S4 occupies a distinct niche in materials science, serving as a stable representative of rare-earth sulfur-oxygen compounds that provide a foundation for exploring complex semiconducting behavior in multi-anion systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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