Co3W
Co3W is a metallic cobalt-tungsten intermetallic compound characterized by its structural diversity and metastable nature.
About Co3W
Co3W is a metallic intermetallic compound composed of cobalt and tungsten. It exhibits complex structural characteristics, as evidenced by the high number of reported structures across various materials databases.
While this compound is currently classified as thermodynamically unstable relative to its constituent elements, its existence in multiple structural forms makes it a subject of interest for fundamental studies in phase stability and alloy design.
Key Properties
Cross-validated computational properties for Co3W, aggregated across 5 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 Co3W, 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 | 0.00 | 0.1087 | -22.659 | 13.14 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.1470 | -22.621 | 13.20 |
| P63/mmc (No. 194) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 12.92 |
| Pm-3m (No. 221) | Cubic | — | — | — | 13.97 |
| Pm-3m (No. 221) | — | — | — | — | — |
| Pm-3m (No. 221) | Cubic | — | — | — | 12.81 |
| Pm-3m (No. 221) | — | — | — | — | — |
| — | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 14.22 |
Applications
Where Co3W is used.
Frequently Asked Questions
Common questions about Co3W, answered from cross-validated data.
What is Co3W?
Co3W is a metallic cobalt-tungsten intermetallic compound characterized by its structural diversity and metastable nature.
What is Co3W used for?
What is the band gap of Co3W?
Is Co3W a metal, semiconductor, or insulator?
Is Co3W thermodynamically stable?
What is the crystal structure of Co3W?
What is the density of Co3W?
How many polymorphs of Co3W are known?
What elements does Co3W contain?
Where does the data for Co3W come from?
How It Compares
As a specialized binary intermetallic, Co3W serves as a distinct example of the complex phase space found in cobalt-tungsten systems, where atomic arrangement significantly influences the thermodynamic landscape of the material.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
- alexandria — Data from alexandria.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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