RbBi
Rubidium bismuthide is a binary intermetallic compound composed of an alkali metal and a post-transition metal. It is primarily studied in solid-state chemistry research for its structural properties and potential electronic characteristics.
BiRb
Overview
Key Properties
Cross-validated computational properties for RbBi, 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.
0.39 eV
Range across DFT structures
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.
0.000 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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
110
3 databases, 23 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for RbBi, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 0.39 | 0.0000 | -2.777 | 5.34 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.2856 | -2.491 | 5.77 |
| P212121 (No. 19) | Orthorhombic | — | — | — | 4.42 |
| P1 (No. 1) | Triclinic | — | — | — | 3.22 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.08 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.04 |
| P2 (No. 3) | Monoclinic | — | — | — | 5.23 |
| P1 (No. 1) | Triclinic | — | — | — | 5.33 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.46 |
| P1 (No. 1) | Triclinic | — | — | — | 3.64 |
| P1 (No. 1) | Triclinic | — | — | — | 3.98 |
| Cm (No. 8) | Monoclinic | — | — | — | 5.33 |
Uses
Applications
Where RbBi is used.
Solid-state physics researchMaterials science studies
Reference
Frequently Asked Questions
Common questions about RbBi, answered from cross-validated data.
What is RbBi?
Rubidium bismuthide is a binary intermetallic compound composed of an alkali metal and a post-transition metal. It is primarily studied in solid-state chemistry research for its structural properties and potential electronic characteristics.
More questions
What is RbBi used for?
RbBi is used in solid-state physics research and materials science studies.
What is the band gap of RbBi?
RbBi has a DFT-computed band gap of 0.39 eV across 110 reported structures.
Is RbBi a metal, semiconductor, or insulator?
With a band gap up to 0.39 eV it is a semiconductor.
Is RbBi thermodynamically stable?
Yes — RbBi sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of RbBi?
The lowest-energy reported polymorph of RbBi is monoclinic symmetry, space group P21/c (No. 14).
What is the density of RbBi?
The computed density of the ground-state structure of RbBi is 5.34 g/cm³.
How many polymorphs of RbBi are known?
110 structures of RbBi are reported across 3 databases, spanning 23 distinct space groups.
What elements does RbBi contain?
RbBi contains Bi and Rb (2 elements).
Where does the data for RbBi come from?
RbBi data is cross-referenced from materials_project, mpaloe, jarvis.
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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