FeSb
Iron antimonide
Iron antimonide is a binary intermetallic compound composed of iron and antimony. It is primarily studied for its magnetic properties and its potential role in advanced materials research.
Overview
Key Properties
Cross-validated computational properties for FeSb, 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.
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.
0.040 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.
Metastable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
77
4 databases, 16 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of FeSb. 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 FeSb, 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 | 0.0404 | -6.376 | 8.42 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 7.87 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.59 |
| P21/m (No. 11) | Monoclinic | — | — | — | 7.48 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.75 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.66 |
| Cm (No. 8) | Monoclinic | — | — | — | 8.67 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.64 |
| Pm (No. 6) | Monoclinic | — | — | — | 5.58 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.81 |
| C2/m (No. 12) | Monoclinic | — | — | — | 5.90 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 8.42 |
Uses
Applications
Where FeSb is used.
Materials science researchMagnetic studiesSolid-state physics experiments
Reference
Frequently Asked Questions
Common questions about FeSb, answered from cross-validated data.
What is FeSb?
Iron antimonide is a binary intermetallic compound composed of iron and antimony. It is primarily studied for its magnetic properties and its potential role in advanced materials research.
More questions
What is FeSb used for?
FeSb is used in materials science research, magnetic studies, and solid-state physics experiments.
What is the band gap of FeSb?
FeSb is computed to be metallic (no band gap) in the reported DFT structures.
Is FeSb a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is FeSb thermodynamically stable?
FeSb has a lowest energy above hull of 0.040 eV/atom (metastable).
What is the crystal structure of FeSb?
The lowest-energy reported polymorph of FeSb is hexagonal symmetry, space group P63/mmc (No. 194).
What is the density of FeSb?
The computed density of the ground-state structure of FeSb is 8.42 g/cm³.
How many polymorphs of FeSb are known?
77 structures of FeSb are reported across 4 databases, spanning 16 distinct space groups.
What elements does FeSb contain?
FeSb contains Fe and Sb (2 elements).
Where does the data for FeSb come from?
FeSb data is cross-referenced from materials_project, mpaloe, jarvis.
Explore
Related Compounds
Other Skutterudite Thermoelectrics in the database.
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).
Analyze FeSb in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →