Be2Mg1Os1
Be2Mg1Os1 is a semiconducting ternary compound of beryllium, magnesium, and osmium that is currently identified as a metastable phase.
About Be2Mg1Os1
Be2Mg1Os1 is a complex ternary inorganic compound composed of beryllium, magnesium, and osmium. It exhibits semiconducting electronic behavior, positioning it as an interesting subject for fundamental research into the interaction between light alkaline earth metals and heavy transition metals.
Despite its existence in multiple structural forms within computational databases, the compound is characterized as being thermodynamically above the hull. This suggests that it may be metastable or difficult to synthesize under standard laboratory conditions, requiring specific high-pressure or non-equilibrium processing routes.
Key Properties
Cross-validated computational properties for Be2Mg1Os1, aggregated across 2 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 Be2Mg1Os1, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.38 | 2.9336 | -2.311 | 0.59 |
| Cmmm (No. 65) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Be2Mg1Os1, answered from cross-validated data.
What is Be2Mg1Os1?
Be2Mg1Os1 is a semiconducting ternary compound of beryllium, magnesium, and osmium that is currently identified as a metastable phase.
What is the band gap of Be2Mg1Os1?
Is Be2Mg1Os1 a metal, semiconductor, or insulator?
Is Be2Mg1Os1 thermodynamically stable?
What is the crystal structure of Be2Mg1Os1?
What is the density of Be2Mg1Os1?
How many polymorphs of Be2Mg1Os1 are known?
What elements does Be2Mg1Os1 contain?
Where does the data for Be2Mg1Os1 come from?
How It Compares
As a unique ternary phase, Be2Mg1Os1 represents a specialized niche in materials science where light-element lattices are integrated with heavy transition metals. Without established siblings in this specific chemical family, it stands as a distinct case study for exploring the limits of phase stability in ternary beryllium-magnesium-osmium systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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