AuK2Sb
AuK2Sb is a thermodynamically stable semiconducting intermetallic compound containing gold, potassium, and antimony.
About AuK2Sb
AuK2Sb is a ternary intermetallic compound composed of gold, potassium, and antimony. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that maintains structural integrity under standard conditions.
This material exhibits semiconducting electronic character, positioning it as an interesting subject for studies into the transport properties of complex metal-antimonide systems. Its existence across multiple databases underscores its significance in systematic investigations of ternary alloy phase spaces.
Key Properties
Cross-validated computational properties for AuK2Sb, aggregated across 3 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 AuK2Sb, 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. |
|---|---|---|---|---|---|
| Cmcm (No. 63) | orthorhombic | 1.00 | 0.0000 | -22.701 | 4.86 |
| — | — | — | — | — | 5.59 |
| R-3m (No. 166) | — | — | — | — | — |
Applications
Where AuK2Sb is used.
Frequently Asked Questions
Common questions about AuK2Sb, answered from cross-validated data.
What is AuK2Sb?
AuK2Sb is a thermodynamically stable semiconducting intermetallic compound containing gold, potassium, and antimony.
What is AuK2Sb used for?
What is the band gap of AuK2Sb?
Is AuK2Sb a metal, semiconductor, or insulator?
Is AuK2Sb thermodynamically stable?
What is the crystal structure of AuK2Sb?
What is the density of AuK2Sb?
How many polymorphs of AuK2Sb are known?
What elements does AuK2Sb contain?
Where does the data for AuK2Sb come from?
How It Compares
As a distinct ternary phase, AuK2Sb serves as a representative example of the structural diversity found within gold-alkali-antimonide systems, providing a stable reference point for researchers exploring the electronic and chemical properties of these complex intermetallic compounds.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
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