HgOs
Mercury osmium is a binary intermetallic compound composed of mercury and osmium. It is primarily studied in the context of fundamental materials science and high-pressure physics research.
HgOs
Overview
Key Properties
Cross-validated computational properties for HgOs, 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.
Metallic / not reported
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.
0.991 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.
Above hull
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
39
4 databases, 12 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for HgOs, 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. |
|---|---|---|---|---|---|
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.9915 | -50.185 | 18.74 |
| C2 (No. 5) | Monoclinic | — | — | — | 18.71 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 20.61 |
| P21/m (No. 11) | Monoclinic | — | — | — | 13.18 |
| P21/m (No. 11) | Monoclinic | — | — | — | 17.68 |
| P21/m (No. 11) | Monoclinic | — | — | — | 16.28 |
| P1 (No. 1) | Triclinic | — | — | — | 14.66 |
| P-1 (No. 2) | Triclinic | — | — | — | 14.06 |
| P-6m2 (No. 187) | — | — | — | — | — |
| P-1 (No. 2) | Triclinic | — | — | — | 20.67 |
| Cmmm (No. 65) | Orthorhombic | — | — | — | 14.56 |
| C2 (No. 5) | Monoclinic | — | — | — | 20.74 |
Uses
Applications
Where HgOs is used.
Fundamental materials researchHigh-pressure physics studies
Reference
Frequently Asked Questions
Common questions about HgOs, answered from cross-validated data.
What is HgOs?
Mercury osmium is a binary intermetallic compound composed of mercury and osmium. It is primarily studied in the context of fundamental materials science and high-pressure physics research.
More questions
What is HgOs used for?
HgOs is used in fundamental materials research and high-pressure physics studies.
What is the band gap of HgOs?
HgOs is computed to be metallic (no band gap) in the reported DFT structures.
Is HgOs a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is HgOs thermodynamically stable?
HgOs has a lowest energy above hull of 0.991 eV/atom (above hull).
What is the crystal structure of HgOs?
The lowest-energy reported polymorph of HgOs is hexagonal symmetry, space group P-6m2 (No. 187).
What is the density of HgOs?
The computed density of the ground-state structure of HgOs is 18.74 g/cm³.
How many polymorphs of HgOs are known?
39 structures of HgOs are reported across 4 databases, spanning 12 distinct space groups.
What elements does HgOs contain?
HgOs contains Hg and Os (2 elements).
Where does the data for HgOs come from?
HgOs data is cross-referenced from materials_project, mpaloe, jarvis, omat24.
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).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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