AlOs
AlOs is a metallic intermetallic compound formed from aluminum and osmium that exhibits sufficient thermodynamic stability to be considered a synthesizable material.
About AlOs
AlOs is a metallic intermetallic compound composed of aluminum and osmium. Its electronic structure suggests high conductivity, typical of metallic systems, and its position near the thermodynamic hull indicates that it is a stable phase capable of being synthesized in a laboratory setting.
With a significant number of reported structures across major materials databases, this compound represents a well-documented entry in the study of binary aluminides. Its stability and metallic nature make it a subject of interest for researchers investigating the fundamental properties of transition metal-aluminum alloys.
Key Properties
Cross-validated computational properties for AlOs, aggregated across 4 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 AlOs, 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 | 0.0126 | -30.349 | 13.39 |
| P1 (No. 1) | Triclinic | — | — | — | 7.25 |
| P21/m (No. 11) | Monoclinic | — | — | — | 10.87 |
| P21/m (No. 11) | Monoclinic | — | — | — | 10.10 |
| C2/m (No. 12) | Monoclinic | — | — | — | 15.39 |
| C2/m (No. 12) | Monoclinic | — | — | — | 11.01 |
| C2/m (No. 12) | Monoclinic | — | — | — | 12.76 |
| Cm (No. 8) | Monoclinic | — | — | — | 6.97 |
| Cm (No. 8) | Monoclinic | — | — | — | 8.13 |
| C2 (No. 5) | Monoclinic | — | — | — | 7.70 |
| P21/m (No. 11) | Monoclinic | — | — | — | 6.32 |
| P21/m (No. 11) | Monoclinic | — | — | — | 8.59 |
Applications
Where AlOs is used.
Frequently Asked Questions
Common questions about AlOs, answered from cross-validated data.
What is AlOs?
AlOs is a metallic intermetallic compound formed from aluminum and osmium that exhibits sufficient thermodynamic stability to be considered a synthesizable material.
What is AlOs used for?
What is the band gap of AlOs?
Is AlOs a metal, semiconductor, or insulator?
Is AlOs thermodynamically stable?
What is the crystal structure of AlOs?
What is the density of AlOs?
How many polymorphs of AlOs are known?
What elements does AlOs contain?
Where does the data for AlOs come from?
How It Compares
As a binary aluminide, AlOs serves as a representative example of the structural diversity found within transition metal-aluminum systems. While it currently stands as a unique entry in this context, it follows the general trend of stable, metallic intermetallics that are often explored for their potential in high-performance structural or electronic applications.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
Analyze AlOs in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →