FeSi
Iron monosilicide · Ferrosilicon
FeSi is a stable, semiconducting iron-silicon compound widely studied for its diverse structural configurations and electronic properties.
About Iron monosilicide
Iron monosilicide is a robust, thermodynamically stable compound that sits prominently on the convex hull of the iron-silicon system. As a semiconducting material, it exhibits unique electronic properties that distinguish it from purely metallic or insulating silicides, making it a subject of significant interest in condensed matter physics and materials engineering.
Its structural versatility is evidenced by the extensive number of reported crystal structures across major databases. This structural richness allows researchers to manipulate its properties for specialized applications, leveraging its stability to maintain performance under diverse processing conditions.
Key Properties
Cross-validated computational properties for Iron monosilicide, 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.
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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of FeSi. 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.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Synthesis Routes
Literature-extracted synthesis procedures targeting FeSi.
Applications
Where Iron monosilicide is used.
Patent Landscape
3 patents reference FeSi or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 11767583 | FeCo alloy, FeSi alloy or Fe sheet or strip and production method thereof, magnetic transformer core produced | — | — |
| 5851264 | Method and agglomerates for production of FeSi | — | — |
| 4128417 | Procedure for the preparation of refined materials containing SiC and/or FeSi | — | — |
Frequently Asked Questions
Common questions about Iron monosilicide, answered from cross-validated data.
What is FeSi?
FeSi is a stable, semiconducting iron-silicon compound widely studied for its diverse structural configurations and electronic properties.
What is FeSi used for?
What is the band gap of FeSi?
Is FeSi a metal, semiconductor, or insulator?
Is FeSi thermodynamically stable?
How many polymorphs of FeSi are known?
How is FeSi synthesized?
What elements does FeSi contain?
Where does the data for FeSi come from?
How It Compares
Within the silicon anode materials class.
Within the class of silicon-based materials, FeSi offers a distinct semiconducting profile compared to the more metallic-like behavior found in silicides such as MoSi2. While materials like Si serve as the fundamental semiconductor standard, FeSi provides a complex, transition-metal-doped framework that contrasts with the simpler binary structures of Mg2Si or NaSi, offering a unique platform for studying electron correlation effects.
Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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