Ga2Os
This is a binary intermetallic compound composed of gallium and osmium. It is primarily studied in the context of materials science research regarding the structural and electronic properties of transition metal gallides.
GaOs
Overview
Key Properties
Cross-validated computational properties for Ga2Os, 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.
0.67 eV
Range across DFT structures
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.
0.074 eV/atom
Best (lowest) across sources
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.
Metastable
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
34
4 databases, 13 space groups
Crystallography
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. |
|---|---|---|---|---|---|
| Fddd (No. 70) | orthorhombic | 0.67 | 0.0739 | -25.496 | 12.48 |
| Pmmn (No. 59) | Orthorhombic | — | — | — | 7.77 |
| C2/c (No. 15) | Monoclinic | — | — | — | 8.65 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 15.00 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.84 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 12.13 |
| — | — | — | — | — | 10.99 |
| Fddd (No. 70) | — | — | — | — | — |
| P-1 (No. 2) | Triclinic | — | — | — | 11.79 |
| P-1 (No. 2) | Triclinic | — | — | — | 12.19 |
| C2/c (No. 15) | Monoclinic | — | — | — | 9.19 |
| C2/c (No. 15) | Monoclinic | — | — | — | 9.04 |
Uses
Applications
Where Ga2Os is used.
Materials science researchSolid-state chemistry studies
Reference
Frequently Asked Questions
Common questions about Ga2Os, answered from cross-validated data.
What is Ga2Os?
This is a binary intermetallic compound composed of gallium and osmium. It is primarily studied in the context of materials science research regarding the structural and electronic properties of transition metal gallides.
More questions
What is Ga2Os used for?
Ga2Os is used in materials science research and solid-state chemistry studies.
What is the band gap of Ga2Os?
Ga2Os has a DFT-computed band gap of 0.67 eV across 34 reported structures.
Is Ga2Os a metal, semiconductor, or insulator?
With a band gap up to 0.67 eV it is a semiconductor.
Is Ga2Os thermodynamically stable?
Ga2Os has a lowest energy above hull of 0.074 eV/atom (metastable).
What is the crystal structure of Ga2Os?
The lowest-energy reported polymorph of Ga2Os is orthorhombic symmetry, space group Fddd (No. 70).
What is the density of Ga2Os?
The computed density of the ground-state structure of Ga2Os is 12.48 g/cm³.
How many polymorphs of Ga2Os are known?
34 structures of Ga2Os are reported across 4 databases, spanning 13 distinct space groups.
What elements does Ga2Os contain?
Ga2Os contains Ga and Os (2 elements).
Where does the data for Ga2Os come from?
Ga2Os data is cross-referenced from materials_project, mpaloe, omat24, jarvis.
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).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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