Au4Bi8Na4O20
Au4Bi8Na4O20 is a stable, semiconducting complex oxide composed of gold, bismuth, sodium, and oxygen.
About Au4Bi8Na4O20
Au4Bi8Na4O20 is a complex inorganic compound featuring a unique arrangement of gold, bismuth, sodium, and oxygen atoms. As a thermodynamically stable phase residing on the convex hull, it represents a robust configuration within its chemical system, offering significant interest for structural studies.
This material exhibits semiconducting electronic characteristics, positioning it as a candidate for specialized electronic or optoelectronic applications. Its stability and distinct elemental composition make it a noteworthy subject for researchers investigating complex bismuth-based oxides.
Key Properties
Cross-validated computational properties for Au4Bi8Na4O20, 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 Au4Bi8Na4O20, 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. |
|---|---|---|---|---|---|
| P4/mbm (No. 127) | tetragonal | 0.84 | 0.0000 | -5.538 | 8.34 |
| P4/mbm (No. 127) | — | — | — | — | — |
| P-4b2 (No. 117) | — | — | — | — | — |
| P-4b2 (No. 117) | — | — | — | — | — |
Applications
Where Au4Bi8Na4O20 is used.
Frequently Asked Questions
Common questions about Au4Bi8Na4O20, answered from cross-validated data.
What is Au4Bi8Na4O20?
Au4Bi8Na4O20 is a stable, semiconducting complex oxide composed of gold, bismuth, sodium, and oxygen.
What is Au4Bi8Na4O20 used for?
What is the band gap of Au4Bi8Na4O20?
Is Au4Bi8Na4O20 a metal, semiconductor, or insulator?
Is Au4Bi8Na4O20 thermodynamically stable?
What is the crystal structure of Au4Bi8Na4O20?
What is the density of Au4Bi8Na4O20?
How many polymorphs of Au4Bi8Na4O20 are known?
What elements does Au4Bi8Na4O20 contain?
Where does the data for Au4Bi8Na4O20 come from?
How It Compares
As a thermodynamically stable phase, this compound serves as a foundational reference point for exploring the broader landscape of complex bismuth-gold-sodium oxides, where such stable configurations are essential for understanding phase diagrams and material synthesis.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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