Ba2Sn1Zn1
Ba2Sn1Zn1 is a semimetallic ternary compound of barium, tin, and zinc that exists as a metastable phase.
About Ba2Sn1Zn1
Ba2Sn1Zn1 is a complex ternary intermetallic compound composed of barium, tin, and zinc. Its electronic character is defined as near-zero-gap, placing it in the category of semimetallic materials that exhibit unique conductive properties. The material is characterized by its position above the thermodynamic hull, suggesting it is a metastable phase. Despite its inherent instability, it has been the subject of significant structural investigation, appearing across numerous reported configurations in computational databases.
Key Properties
Cross-validated computational properties for Ba2Sn1Zn1, 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 Ba2Sn1Zn1, 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 | 0.09 | 1.5785 | -1.200 | 0.43 |
| P4/mmm (No. 123) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P2/m (No. 10) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| P4mm (No. 99) | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| I-4m2 (No. 119) | — | — | — | — | — |
| Cmm2 (No. 35) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Ba2Sn1Zn1, answered from cross-validated data.
What is Ba2Sn1Zn1?
Ba2Sn1Zn1 is a semimetallic ternary compound of barium, tin, and zinc that exists as a metastable phase.
What is the band gap of Ba2Sn1Zn1?
Is Ba2Sn1Zn1 a metal, semiconductor, or insulator?
Is Ba2Sn1Zn1 thermodynamically stable?
What is the crystal structure of Ba2Sn1Zn1?
What is the density of Ba2Sn1Zn1?
How many polymorphs of Ba2Sn1Zn1 are known?
What elements does Ba2Sn1Zn1 contain?
Where does the data for Ba2Sn1Zn1 come from?
How It Compares
As a ternary intermetallic phase, Ba2Sn1Zn1 represents a specific point in the vast chemical space of barium-based alloys. Without direct structural siblings in this specific class, it serves as a distinct example of how alkaline earth metals combine with post-transition metals and zinc to form complex, albeit metastable, electronic 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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