FeH3
FeH3 is a metallic iron hydride phase characterized by its structural diversity and metastable nature.
About FeH3
FeH3 is a metallic iron hydride that represents a complex phase in the iron-hydrogen system. Its metallic electronic character suggests unique conduction properties that are often explored under extreme conditions where hydrogen-rich materials become of significant interest to condensed matter physics. Due to its position above the thermodynamic hull, FeH3 is considered a metastable or unstable phase under standard conditions. Despite this, it remains a subject of intense structural study, with numerous reported configurations across various databases highlighting the intricate nature of iron-hydrogen bonding.
Key Properties
Cross-validated computational properties for FeH3, 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.
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.
Applications
Where FeH3 is used.
Frequently Asked Questions
Common questions about FeH3, answered from cross-validated data.
What is FeH3?
FeH3 is a metallic iron hydride phase characterized by its structural diversity and metastable nature.
What is FeH3 used for?
What is the band gap of FeH3?
Is FeH3 a metal, semiconductor, or insulator?
Is FeH3 thermodynamically stable?
How many polymorphs of FeH3 are known?
What elements does FeH3 contain?
Where does the data for FeH3 come from?
How It Compares
As a member of the iron hydride family, FeH3 serves as a critical data point for understanding the structural diversity of metal hydrides. While many simpler hydrides are well-characterized, FeH3 is notable for the high number of structural variations reported, reflecting the complex energy landscape that iron and hydrogen navigate when forced into high-stoichiometry arrangements.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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