Cs2O4Y2
Cs2O4Y2 is a stable, semiconducting ternary oxide composed of cesium, yttrium, and oxygen.
About Cs2O4Y2
Cs2O4Y2 is a complex oxide featuring cesium, yttrium, and oxygen. As a thermodynamically stable compound residing on the convex hull, it represents a well-defined structural arrangement that maintains chemical integrity under standard conditions.
This material exhibits semiconducting electronic character, making it an intriguing candidate for specialized electronic or optoelectronic applications. Its existence across multiple crystallographic databases highlights its significance as a distinct phase within the landscape of ternary oxides.
Key Properties
Cross-validated computational properties for Cs2O4Y2, 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 Cs2O4Y2, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 2.85 | 0.0000 | -7.263 | 5.70 |
| — | — | — | — | — | 4.31 |
| P63/mmc (No. 194) | — | — | — | — | — |
Applications
Where Cs2O4Y2 is used.
Frequently Asked Questions
Common questions about Cs2O4Y2, answered from cross-validated data.
What is Cs2O4Y2?
Cs2O4Y2 is a stable, semiconducting ternary oxide composed of cesium, yttrium, and oxygen.
What is Cs2O4Y2 used for?
What is the band gap of Cs2O4Y2?
Is Cs2O4Y2 a metal, semiconductor, or insulator?
Is Cs2O4Y2 thermodynamically stable?
What is the crystal structure of Cs2O4Y2?
What is the density of Cs2O4Y2?
How many polymorphs of Cs2O4Y2 are known?
What elements does Cs2O4Y2 contain?
Where does the data for Cs2O4Y2 come from?
How It Compares
As a unique ternary oxide phase, Cs2O4Y2 serves as a foundational example of how cesium and yttrium can integrate into a stable oxygen-coordinated framework. While it does not share its specific structural class with other common binary oxides, its stability and semiconducting nature position it as a notable subject for exploring complex oxide behavior.
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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