Fe3Ge2
This compound is a binary intermetallic material composed of iron and germanium. It is primarily studied in materials science for its unique magnetic properties and its potential utility in advanced electronic and spintronic research.
FeGe
Overview
Key Properties
Cross-validated computational properties for Fe3Ge2, aggregated across 6 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.
0.063 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
4 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
26
6 databases, 8 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Fe3Ge2. 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
aflow, 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 Fe3Ge2, 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. |
|---|---|---|---|---|---|
| P-6m2 (No. 187) | hexagonal | 0.00 | 0.0628 | -7.004 | 7.60 |
| P-3m1 (No. 164) | trigonal | 0.00 | 0.1483 | -6.919 | 7.64 |
| P-3m1 (No. 164) | — | — | — | — | — |
| R-3m (No. 166) | Trigonal | — | — | — | 8.15 |
| No. 0 | unknown | — | — | — | 1.86 |
| P-3m1 (No. 164) | — | — | — | — | — |
| P-6m2 (No. 187) | — | — | — | — | — |
| — | — | — | — | — | 7.88 |
| Pmm2 (No. 25) | Orthorhombic | — | — | — | 6.68 |
| R-3m (No. 166) | — | — | — | — | — |
| P4mm (No. 99) | Tetragonal | — | — | — | 5.10 |
| Pmm2 (No. 25) | Orthorhombic | — | — | — | 6.55 |
Uses
Applications
Where Fe3Ge2 is used.
Magnetic materials researchSpintronics developmentSolid-state physics studies
Reference
Frequently Asked Questions
Common questions about Fe3Ge2, answered from cross-validated data.
What is Fe3Ge2?
This compound is a binary intermetallic material composed of iron and germanium. It is primarily studied in materials science for its unique magnetic properties and its potential utility in advanced electronic and spintronic research.
More questions
What is Fe3Ge2 used for?
Fe3Ge2 is used in magnetic materials research, spintronics development, and solid-state physics studies.
What is the band gap of Fe3Ge2?
Fe3Ge2 is computed to be metallic (no band gap) in the reported DFT structures.
Is Fe3Ge2 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is Fe3Ge2 thermodynamically stable?
Fe3Ge2 has a lowest energy above hull of 0.063 eV/atom (metastable).
What is the crystal structure of Fe3Ge2?
The lowest-energy reported polymorph of Fe3Ge2 is hexagonal symmetry, space group P-6m2 (No. 187).
What is the density of Fe3Ge2?
The computed density of the ground-state structure of Fe3Ge2 is 7.60 g/cm³.
How many polymorphs of Fe3Ge2 are known?
26 structures of Fe3Ge2 are reported across 6 databases, spanning 8 distinct space groups.
What elements does Fe3Ge2 contain?
Fe3Ge2 contains Fe and Ge (2 elements).
Where does the data for Fe3Ge2 come from?
Fe3Ge2 data is cross-referenced from materials_project, aflow, mpaloe, cod, jarvis, omat24.
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).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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