Be2Fe
This intermetallic compound is composed of beryllium and iron. It is primarily studied for its structural properties and behavior within specialized metallurgical research environments.
BeFe
Overview
Key Properties
Cross-validated computational properties for Be2Fe, 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.
0.000 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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
30
4 databases, 14 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of Be2Fe. 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 Be2Fe, 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 | 0.0000 | -5.594 | 4.75 |
| C2/m (No. 12) | Monoclinic | — | — | — | 4.46 |
| C2/m (No. 12) | Monoclinic | — | — | — | 2.19 |
| R-3m (No. 166) | Trigonal | — | — | — | 2.49 |
| R-3m (No. 166) | Trigonal | — | — | — | 2.62 |
| P63/mmc (No. 194) | Hexagonal | — | — | — | 4.77 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.44 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.89 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 4.90 |
| Cmme (No. 67) | Orthorhombic | — | — | — | 2.31 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 2.89 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.59 |
Uses
Applications
Where Be2Fe is used.
Materials science researchMetallurgical studies
Reference
Frequently Asked Questions
Common questions about Be2Fe, answered from cross-validated data.
What is Be2Fe?
This intermetallic compound is composed of beryllium and iron. It is primarily studied for its structural properties and behavior within specialized metallurgical research environments.
More questions
What is Be2Fe used for?
Be2Fe is used in materials science research and metallurgical studies.
What is the band gap of Be2Fe?
Be2Fe is computed to be metallic (no band gap) in the reported DFT structures.
Is Be2Fe a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is Be2Fe thermodynamically stable?
Yes — Be2Fe sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of Be2Fe?
The lowest-energy reported polymorph of Be2Fe is hexagonal symmetry, space group P63/mmc (No. 194).
What is the density of Be2Fe?
The computed density of the ground-state structure of Be2Fe is 4.75 g/cm³.
How many polymorphs of Be2Fe are known?
30 structures of Be2Fe are reported across 4 databases, spanning 14 distinct space groups.
What elements does Be2Fe contain?
Be2Fe contains Be and Fe (2 elements).
Where does the data for Be2Fe come from?
Be2Fe data is cross-referenced from materials_project, mpaloe, jarvis, cod.
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).
Analyze Be2Fe in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →