Co2Sn
This intermetallic compound is composed of cobalt and tin. It is primarily studied for its magnetic properties and its potential utility in advanced materials research.
CoSn
Overview
Key Properties
Cross-validated computational properties for Co2Sn, aggregated across 5 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.
Metallic / not reported
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.
0.222 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.
Above hull
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
29
5 databases, 10 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Co2Sn. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
1.00 / 1.00
Trust tier: medium
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.000 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
2
jarvis, materials_project
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for Co2Sn, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 0.00 | 0.2216 | -5.934 | 9.49 |
| P-3m1 (No. 164) | Trigonal | — | — | — | 7.96 |
| C2/c (No. 15) | Monoclinic | — | — | — | 5.10 |
| C2/c (No. 15) | Monoclinic | — | — | — | 4.95 |
| C2/c (No. 15) | Monoclinic | — | — | — | 5.56 |
| P63/mmc (No. 194) | — | — | — | — | — |
| C2/c (No. 15) | Monoclinic | — | — | — | 8.96 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 9.06 |
| P1 (No. 1) | Triclinic | — | — | — | 9.70 |
| P1 (No. 1) | Triclinic | — | — | — | 8.91 |
| P1 (No. 1) | Triclinic | — | — | — | 8.88 |
| C2/m (No. 12) | Monoclinic | — | — | — | 9.98 |
Uses
Applications
Where Co2Sn is used.
Magnetic material researchIntermetallic alloy developmentSolid-state physics studies
Reference
Frequently Asked Questions
Common questions about Co2Sn, answered from cross-validated data.
What is Co2Sn?
This intermetallic compound is composed of cobalt and tin. It is primarily studied for its magnetic properties and its potential utility in advanced materials research.
More questions
What is Co2Sn used for?
Co2Sn is used in magnetic material research, intermetallic alloy development, and solid-state physics studies.
What is the band gap of Co2Sn?
Co2Sn is computed to be metallic (no band gap) in the reported DFT structures.
Is Co2Sn a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is Co2Sn thermodynamically stable?
Co2Sn has a lowest energy above hull of 0.222 eV/atom (above hull).
What is the crystal structure of Co2Sn?
The lowest-energy reported polymorph of Co2Sn is hexagonal symmetry, space group P63/mmc (No. 194).
What is the density of Co2Sn?
The computed density of the ground-state structure of Co2Sn is 9.49 g/cm³.
How many polymorphs of Co2Sn are known?
29 structures of Co2Sn are reported across 5 databases, spanning 10 distinct space groups.
What elements does Co2Sn contain?
Co2Sn contains Co and Sn (2 elements).
Where does the data for Co2Sn come from?
Co2Sn data is cross-referenced from materials_project, mpaloe, jarvis, cod, omat24.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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