Fe3N
Fe3N has a DFT band gap of Metallic / not reported across 46 reported structures in 10 space groups; its reference structure is trigonal (P312 (No. 149)). Cross-validated across 5 computational databases.
FeN
At a glance
Key Properties
Cross-validated computational properties for Fe3N, 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.
0.000 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.
Stable
3 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
46
5 databases, 10 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Fe3N. 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: high
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.
3
jarvis, materials_project, oqmd
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 Fe3N, 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. |
|---|---|---|---|---|---|
| P6322 (No. 182) | hexagonal | 0.00 | 0.0000 | -8.595 | 7.39 |
| P6322 (No. 182) | hexagonal | 0.00 | 0.0000 | -0.152 | — |
| — | — | 0.00 | 0.0000 | -0.127 | — |
| — | — | 0.00 | 0.0001 | -0.127 | — |
| P312 (No. 149) | trigonal | 0.00 | 0.0030 | -8.592 | 7.45 |
| P6322 (No. 182) | hexagonal | 0.00 | 0.0115 | -0.140 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.0115 | -0.140 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.1095 | -0.042 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.1097 | -0.042 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.1098 | -0.042 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.1101 | -0.041 | — |
| P6322 (No. 182) | hexagonal | 0.00 | 0.1102 | -0.041 | — |
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting Fe3N.
Sol Gel
Procedure available · ceder_sol_gel
Intellectual Property
Patent Landscape
1 patent reference Fe3N or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8420407 | Growth method of Fe3N material | — | — |
Reference
Frequently Asked Questions
Common questions about Fe3N, answered from cross-validated data.
What is the band gap of Fe3N?
The reported DFT structures of Fe3N show no band gap. Standard DFT often misses gaps (especially in transition-metal oxides), so this is not proof the real material is a metal.
More questions
Is Fe3N a metal, semiconductor, or insulator?
DFT calculations predict no band gap. Standard DFT can miss gaps, so measurements are needed to confirm metallic behavior.
Is Fe3N thermodynamically stable?
Yes — Fe3N sits on the convex hull (energy above hull 0 eV/atom), i.e. stable.
What is the crystal structure of Fe3N?
The reference structure of Fe3N is trigonal symmetry, space group P312 (No. 149).
What is the density of Fe3N?
The computed density of the ground-state structure of Fe3N is 7.45 g/cm³.
How many polymorphs of Fe3N are known?
46 structures of Fe3N are reported across 5 databases, spanning 10 distinct space groups.
How is Fe3N synthesized?
Literature-reported routes for Fe3N include sol gel.
What elements does Fe3N contain?
Fe3N contains Fe and N (2 elements).
Where does the data for Fe3N come from?
Fe3N data is cross-referenced from materials_project, jarvis, oqmd, mpaloe, cod.
Data sources & attribution
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
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