Al2Cs2O9P2
Al2Cs2O9P2 is a thermodynamically stable, insulating aluminum cesium phosphate compound.
About Al2Cs2O9P2
Al2Cs2O9P2 is a complex inorganic phosphate that exhibits robust thermodynamic stability, residing on the convex hull of its constituent elements. As a wide-band-gap insulator, it possesses electronic properties characteristic of highly stable dielectric materials.
This compound is of significant interest in materials science due to its structural integrity and insulating nature. Its existence across multiple reported structures suggests a versatile framework that may be useful in specialized solid-state applications requiring stable, non-conductive oxide environments.
Key Properties
Cross-validated computational properties for Al2Cs2O9P2, 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 Al2Cs2O9P2, 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. |
|---|---|---|---|---|---|
| P-1 (No. 2) | triclinic | 4.90 | 0.0000 | -7.303 | 3.34 |
| — | — | — | — | — | 3.31 |
| P-1 (No. 2) | — | — | — | — | — |
| — | — | — | — | — | 3.17 |
Applications
Where Al2Cs2O9P2 is used.
Frequently Asked Questions
Common questions about Al2Cs2O9P2, answered from cross-validated data.
What is Al2Cs2O9P2?
Al2Cs2O9P2 is a thermodynamically stable, insulating aluminum cesium phosphate compound.
What is Al2Cs2O9P2 used for?
What is the band gap of Al2Cs2O9P2?
Is Al2Cs2O9P2 a metal, semiconductor, or insulator?
Is Al2Cs2O9P2 thermodynamically stable?
What is the crystal structure of Al2Cs2O9P2?
What is the density of Al2Cs2O9P2?
How many polymorphs of Al2Cs2O9P2 are known?
What elements does Al2Cs2O9P2 contain?
Where does the data for Al2Cs2O9P2 come from?
How It Compares
As a unique inorganic phosphate, Al2Cs2O9P2 represents a distinct structural arrangement within the broader family of aluminum-cesium-phosphorus-oxygen compounds, serving as a benchmark for thermodynamic stability in this chemical space.
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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