Fe3Sn2
Fe3Sn2 is a thermodynamically stable metallic intermetallic compound composed of iron and tin.
About Fe3Sn2
Fe3Sn2 is a metallic iron-tin intermetallic compound that occupies a stable position on the thermodynamic convex hull. Its electronic character is defined by its metallic nature, lacking a band gap, which makes it a subject of interest for fundamental studies in magnetism and alloy physics. The compound is notably data-rich, with multiple reported structures across various materials databases, reflecting its significance in structural research. As a stable phase in the iron-tin binary system, it serves as a key reference point for understanding the phase behavior and atomic arrangements of metal-rich intermetallics. Its structural diversity across reported datasets highlights its complexity and the importance of precise synthesis control in achieving specific crystalline forms.
Key Properties
Cross-validated computational properties for Fe3Sn2, aggregated across 4 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 Fe3Sn2, 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. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.0004 | -6.688 | 8.21 |
| R-3m (No. 166) | Trigonal | — | — | — | 8.28 |
| R-3m (No. 166) | Trigonal | — | — | — | 8.17 |
| R-3m (No. 166) | Trigonal | — | — | — | 8.18 |
| R-3m (No. 166) | — | — | — | — | — |
| P-3m1 (No. 164) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
Synthesis Routes
Literature-extracted synthesis procedures targeting Fe3Sn2.
Applications
Where Fe3Sn2 is used.
Frequently Asked Questions
Common questions about Fe3Sn2, answered from cross-validated data.
What is Fe3Sn2?
Fe3Sn2 is a thermodynamically stable metallic intermetallic compound composed of iron and tin.
What is Fe3Sn2 used for?
What is the band gap of Fe3Sn2?
Is Fe3Sn2 a metal, semiconductor, or insulator?
Is Fe3Sn2 thermodynamically stable?
What is the crystal structure of Fe3Sn2?
What is the density of Fe3Sn2?
How many polymorphs of Fe3Sn2 are known?
How is Fe3Sn2 synthesized?
What elements does Fe3Sn2 contain?
Where does the data for Fe3Sn2 come from?
How It Compares
As a thermodynamically stable intermetallic, Fe3Sn2 represents a well-defined phase within the broader landscape of iron-tin binary compounds, serving as a foundational material for investigating metallic bonding and magnetic interactions in transition metal-post transition metal systems.
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).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
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