OsW2
OsW2 is a metastable metallic compound consisting of osmium and tungsten that is frequently analyzed for its structural characteristics.
About OsW2
OsW2 is a metallic binary compound formed from osmium and tungsten. As a metastable phase, it represents a complex structural arrangement that highlights the intricate phase space of transition metal alloys. Its metallic nature suggests potential utility in applications requiring high electrical conductivity or specialized electronic properties.
Given the significant number of reported structures across multiple databases, this compound is a subject of interest for researchers studying alloy stability and phase formation. Its existence as a metastable material provides valuable insights into the synthesis and structural diversity of heavy metal combinations.
Key Properties
Cross-validated computational properties for OsW2, 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 OsW2, 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. |
|---|---|---|---|---|---|
| P42/mnm (No. 136) | tetragonal | 0.00 | 0.0296 | -51.900 | 19.62 |
| P-1 (No. 2) | Triclinic | — | — | — | 17.59 |
| C2/m (No. 12) | Monoclinic | — | — | — | 17.59 |
| P-1 (No. 2) | Triclinic | — | — | — | 20.40 |
| C2/m (No. 12) | Monoclinic | — | — | — | 18.06 |
| P-1 (No. 2) | Triclinic | — | — | — | 19.46 |
| P1 (No. 1) | Triclinic | — | — | — | 20.77 |
| I4/mcm (No. 140) | Tetragonal | — | — | — | 15.07 |
| P-1 (No. 2) | Triclinic | — | — | — | 20.35 |
| P-1 (No. 2) | Triclinic | — | — | — | 21.36 |
| P-1 (No. 2) | Triclinic | — | — | — | 15.01 |
| P-1 (No. 2) | Triclinic | — | — | — | 12.11 |
Applications
Where OsW2 is used.
Frequently Asked Questions
Common questions about OsW2, answered from cross-validated data.
What is OsW2?
OsW2 is a metastable metallic compound consisting of osmium and tungsten that is frequently analyzed for its structural characteristics.
What is OsW2 used for?
What is the band gap of OsW2?
Is OsW2 a metal, semiconductor, or insulator?
Is OsW2 thermodynamically stable?
What is the crystal structure of OsW2?
What is the density of OsW2?
How many polymorphs of OsW2 are known?
What elements does OsW2 contain?
Where does the data for OsW2 come from?
How It Compares
As a unique binary metallic phase, OsW2 serves as an important case study for understanding the structural complexity inherent in transition metal systems where thermodynamic stability is delicately balanced.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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