Bi1In2Tl1
Bi1In2Tl1 is a semiconducting ternary intermetallic compound composed of bismuth, indium, and thallium.

About Bi1In2Tl1
Bi1In2Tl1 is a complex intermetallic compound composed of bismuth, indium, and thallium. It exhibits semiconducting electronic behavior, marking it as a material of interest for fundamental studies in solid-state physics and electronic structure theory. The compound is characterized by a significant number of reported structural configurations despite being situated above the thermodynamic hull. This suggests that while it may be metastable under standard conditions, it remains a subject of interest for researchers investigating phase stability and synthesis pathways in heavy-metal systems.
Key Properties
Cross-validated computational properties for Bi1In2Tl1, 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 Bi1In2Tl1, 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 | 0.24 | 1.0355 | -38.210 | 0.89 |
| Cm (No. 8) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| Pmm2 (No. 25) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Cmmm (No. 65) | — | — | — | — | — |
| Cmm2 (No. 35) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
Applications
Where Bi1In2Tl1 is used.
Frequently Asked Questions
Common questions about Bi1In2Tl1, answered from cross-validated data.
What is Bi1In2Tl1?
Bi1In2Tl1 is a semiconducting ternary intermetallic compound composed of bismuth, indium, and thallium.
What is Bi1In2Tl1 used for?
What is the band gap of Bi1In2Tl1?
Is Bi1In2Tl1 a metal, semiconductor, or insulator?
Is Bi1In2Tl1 thermodynamically stable?
What is the crystal structure of Bi1In2Tl1?
What is the density of Bi1In2Tl1?
How many polymorphs of Bi1In2Tl1 are known?
What elements does Bi1In2Tl1 contain?
Where does the data for Bi1In2Tl1 come from?
How It Compares
As a unique intermetallic phase, Bi1In2Tl1 serves as a distinct case study for how heavy p-block elements interact to form semiconducting lattices. Without direct structural siblings in this specific dataset, it stands as a singular example of how complex ternary compositions can be explored to understand the limits of thermodynamic stability in multi-element metallic 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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