AlSi
This binary compound consists of aluminum and silicon, typically appearing as an intermetallic phase within alloy systems. It is primarily studied for its role in modifying the structural and mechanical properties of aluminum-based materials.
Key Properties
Cross-validated computational properties for AlSi, 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 AlSi, 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. |
|---|---|---|---|---|---|
| Pm-3m (No. 221) | cubic | 0.00 | 0.3032 | -7.450 | 2.92 |
| P-1 (No. 2) | Triclinic | — | — | — | 2.00 |
| C2/m (No. 12) | Monoclinic | — | — | — | 2.00 |
| P1 (No. 1) | Triclinic | — | — | — | 1.75 |
| P1 (No. 1) | Triclinic | — | — | — | 1.93 |
| P1 (No. 1) | Triclinic | — | — | — | 2.44 |
| P-1 (No. 2) | Triclinic | — | — | — | 1.27 |
| P-1 (No. 2) | Triclinic | — | — | — | 1.55 |
| P-1 (No. 2) | Triclinic | — | — | — | 3.34 |
| P42/mmc (No. 131) | Tetragonal | — | — | — | 3.01 |
| P2/m (No. 10) | Monoclinic | — | — | — | 1.58 |
| P-1 (No. 2) | Triclinic | — | — | — | 1.79 |
Applications
Where AlSi is used.
Frequently Asked Questions
Common questions about AlSi, answered from cross-validated data.
What is AlSi?
This binary compound consists of aluminum and silicon, typically appearing as an intermetallic phase within alloy systems. It is primarily studied for its role in modifying the structural and mechanical properties of aluminum-based materials.
What is AlSi used for?
What is the band gap of AlSi?
Is AlSi a metal, semiconductor, or insulator?
Is AlSi thermodynamically stable?
What is the crystal structure of AlSi?
What is the density of AlSi?
How many polymorphs of AlSi are known?
What elements does AlSi contain?
Where does the data for AlSi come from?
Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
Analyze AlSi in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →