Ga2Os
Ga2Os is a metastable semiconducting compound consisting of gallium and osmium atoms.
About Ga2Os
Ga2Os is a distinct semiconducting compound composed of gallium and osmium. As a metastable phase, it represents a specialized area of study within inorganic chemistry, offering researchers insights into the complex bonding interactions between transition metals and post-transition elements.
Its electronic character makes it a subject of interest for fundamental materials science investigations. While its metastable nature presents challenges for synthesis, the compound remains a significant data point for understanding phase stability and structural diversity in binary metal systems.
Key Properties
Cross-validated computational properties for Ga2Os, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Ga2Os. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for Ga2Os, 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. |
|---|---|---|---|---|---|
| — | — | 1.03 | 0.0725 | -0.161 | — |
| Fddd (No. 70) | orthorhombic | 0.67 | 0.0739 | -25.496 | 12.48 |
| Fddd (No. 70) | orthorhombic | 0.67 | 0.0838 | -0.133 | — |
| Amm2 (No. 38) | orthorhombic | 0.00 | 0.2209 | 0.004 | — |
| — | — | 0.00 | 0.3324 | 0.099 | — |
| — | — | 0.00 | 0.9572 | 0.724 | — |
| — | — | 0.00 | 1.2442 | 1.011 | — |
| C2/c (No. 15) | monoclinic | — | — | — | 9.04 |
| Cmcm (No. 63) | orthorhombic | — | — | — | 15.00 |
| Cmcm (No. 63) | orthorhombic | — | — | — | 12.13 |
| P-1 (No. 2) | triclinic | — | — | — | 6.47 |
| Pmmn (No. 59) | orthorhombic | — | — | — | 6.22 |
Applications
Where Ga2Os is used.
Frequently Asked Questions
Common questions about Ga2Os, answered from cross-validated data.
What is Ga2Os?
Ga2Os is a metastable semiconducting compound consisting of gallium and osmium atoms.
What is Ga2Os used for?
What is the band gap of Ga2Os?
Is Ga2Os a metal, semiconductor, or insulator?
Is Ga2Os thermodynamically stable?
What is the crystal structure of Ga2Os?
What is the density of Ga2Os?
How many polymorphs of Ga2Os are known?
What elements does Ga2Os contain?
Where does the data for Ga2Os come from?
How It Compares
As a unique binary compound, Ga2Os occupies a specialized niche in materials research. Without direct structural siblings, it serves as an important reference point for exploring the electronic and thermodynamic boundaries of gallium-based intermetallic semiconductors.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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