B2Os
B2Os is a thermodynamically stable metallic compound formed from boron and osmium that is frequently studied for its complex structural properties.
About B2Os
B2Os is a distinct metallic compound composed of boron and osmium. As a thermodynamically stable phase residing on the convex hull, it represents a robust crystalline arrangement that has garnered significant interest within materials databases due to its structural diversity.
Its metallic electronic character suggests potential utility in applications requiring conductive properties combined with the hardness often associated with metal borides. With hundreds of reported structures across various databases, it stands as a highly studied system for fundamental research into transition metal-boron interactions.
Key Properties
Cross-validated computational properties for B2Os, 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 B2Os, 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. |
|---|---|---|---|---|---|
| Pmmn (No. 59) | orthorhombic | 0.00 | 0.0000 | -22.794 | 12.76 |
| I4/mcm (No. 140) | Tetragonal | — | — | — | 10.90 |
| C2/m (No. 12) | Monoclinic | — | — | — | 12.12 |
| C2/m (No. 12) | Monoclinic | — | — | — | 13.06 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 10.42 |
| C2/m (No. 12) | Monoclinic | — | — | — | 12.62 |
| Cm (No. 8) | Monoclinic | — | — | — | 11.98 |
| P-3m1 (No. 164) | Trigonal | — | — | — | 8.36 |
| Pmmn (No. 59) | Orthorhombic | — | — | — | 13.02 |
| C2 (No. 5) | Monoclinic | — | — | — | 7.48 |
| Cm (No. 8) | Monoclinic | — | — | — | 7.47 |
| I4/mcm (No. 140) | Tetragonal | — | — | — | 7.93 |
Applications
Where B2Os is used.
Frequently Asked Questions
Common questions about B2Os, answered from cross-validated data.
What is B2Os?
B2Os is a thermodynamically stable metallic compound formed from boron and osmium that is frequently studied for its complex structural properties.
What is B2Os used for?
What is the band gap of B2Os?
Is B2Os a metal, semiconductor, or insulator?
Is B2Os thermodynamically stable?
What is the crystal structure of B2Os?
What is the density of B2Os?
How many polymorphs of B2Os are known?
What elements does B2Os contain?
Where does the data for B2Os come from?
How It Compares
As a unique metallic boride, B2Os occupies a specialized niche in materials science where its thermodynamic stability makes it a primary candidate for investigating the structural evolution of heavy metal borides under varying synthesis conditions.
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).
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