Co2Cs4O8Si2
Co2Cs4O8Si2 is a thermodynamically stable semiconducting silicate containing cobalt and cesium.
About Co2Cs4O8Si2
Co2Cs4O8Si2 is a complex silicate compound containing cobalt and cesium. As a thermodynamically stable material located on the convex hull, it represents a robust structural arrangement that maintains its integrity under standard conditions. Its electronic character as a semiconductor makes it an interesting subject for fundamental research into transition metal-doped silicate frameworks.
This material is primarily of interest to researchers investigating the interplay between heavy alkali metals and transition metal centers within an oxygen-coordinated lattice. Due to its status as a stable phase, it serves as a reliable reference point for computational studies exploring the structural diversity of cobalt-based silicate architectures.
Key Properties
Cross-validated computational properties for Co2Cs4O8Si2, 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 Co2Cs4O8Si2, 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. |
|---|---|---|---|---|---|
| Cmc21 (No. 36) | orthorhombic | 2.87 | 0.0000 | -6.569 | 4.45 |
| — | — | — | — | — | 4.03 |
| Cmc21 (No. 36) | — | — | — | — | — |
Applications
Where Co2Cs4O8Si2 is used.
Frequently Asked Questions
Common questions about Co2Cs4O8Si2, answered from cross-validated data.
What is Co2Cs4O8Si2?
Co2Cs4O8Si2 is a thermodynamically stable semiconducting silicate containing cobalt and cesium.
What is Co2Cs4O8Si2 used for?
What is the band gap of Co2Cs4O8Si2?
Is Co2Cs4O8Si2 a metal, semiconductor, or insulator?
Is Co2Cs4O8Si2 thermodynamically stable?
What is the crystal structure of Co2Cs4O8Si2?
What is the density of Co2Cs4O8Si2?
How many polymorphs of Co2Cs4O8Si2 are known?
What elements does Co2Cs4O8Si2 contain?
Where does the data for Co2Cs4O8Si2 come from?
How It Compares
As a unique cobalt-cesium silicate, this compound occupies a distinct niche in materials science. Unlike more common binary or ternary silicates, its specific stoichiometry and stable configuration allow it to serve as a foundational example for understanding how heavy cations like cesium stabilize complex transition metal-oxygen networks.
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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