Al2W
Al2W is a metallic intermetallic compound formed from aluminum and tungsten that exists in a metastable state.
About Al2W
Al2W is a metallic intermetallic compound composed of aluminum and tungsten. As a metastable phase, it represents a complex structural arrangement that highlights the intricate phase relationships within the aluminum-tungsten binary system.
Its metallic character suggests high electrical and thermal conductivity, typical of aluminide intermetallics. The material is of significant interest to researchers studying phase stability and the formation of complex crystalline structures in transition metal-aluminide systems.
Key Properties
Cross-validated computational properties for Al2W, 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 Al2W, 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. |
|---|---|---|---|---|---|
| P6422 (No. 181) | hexagonal | 0.00 | 0.0931 | -21.669 | 8.49 |
| I4/mmm (No. 139) | Tetragonal | — | — | — | 7.11 |
| Aea2 (No. 41) | Orthorhombic | — | — | — | 6.96 |
| C2/m (No. 12) | Monoclinic | — | — | — | 9.56 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.31 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.29 |
| Amm2 (No. 38) | Orthorhombic | — | — | — | 7.44 |
| Amm2 (No. 38) | Orthorhombic | — | — | — | 6.40 |
| Amm2 (No. 38) | Orthorhombic | — | — | — | 6.67 |
| P6422 (No. 181) | Hexagonal | — | — | — | 8.49 |
| P6422 (No. 181) | Hexagonal | — | — | — | 8.93 |
| Aea2 (No. 41) | Orthorhombic | — | — | — | 5.49 |
Applications
Where Al2W is used.
Frequently Asked Questions
Common questions about Al2W, answered from cross-validated data.
What is Al2W?
Al2W is a metallic intermetallic compound formed from aluminum and tungsten that exists in a metastable state.
What is Al2W used for?
What is the band gap of Al2W?
Is Al2W a metal, semiconductor, or insulator?
Is Al2W thermodynamically stable?
What is the crystal structure of Al2W?
What is the density of Al2W?
How many polymorphs of Al2W are known?
What elements does Al2W contain?
Where does the data for Al2W come from?
How It Compares
As a specialized intermetallic compound, Al2W occupies a unique position in materials science research. While many aluminides are studied for their structural applications, this specific phase is notable for its metastable nature and the high volume of structural data available across multiple databases, making it a key subject for computational studies on phase formation.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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