HfI3
Hafnium triiodide is a thermodynamically stable, metallic compound formed from hafnium and iodine.
About HfI3
Hafnium triiodide is a distinct inorganic compound composed of hafnium and iodine. As a thermodynamically stable phase located on the convex hull, it represents a well-defined structural arrangement within the hafnium-halide system.
Characterized by its metallic electronic nature, this material lacks a band gap, distinguishing it from typical insulating halide salts. Its structural diversity is highlighted by numerous reported configurations across major materials databases, making it a subject of interest for fundamental solid-state research.
Key Properties
Cross-validated computational properties for HfI3, 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 HfI3 is used.
Frequently Asked Questions
Common questions about HfI3, answered from cross-validated data.
What is HfI3?
Hafnium triiodide is a thermodynamically stable, metallic compound formed from hafnium and iodine.
What is HfI3 used for?
What is the band gap of HfI3?
Is HfI3 a metal, semiconductor, or insulator?
Is HfI3 thermodynamically stable?
How many polymorphs of HfI3 are known?
What elements does HfI3 contain?
Where does the data for HfI3 come from?
How It Compares
As a standalone entry in this context, hafnium triiodide serves as a primary reference point for metallic hafnium halides, demonstrating the stability possible in metal-rich iodine systems compared to more common insulating hafnium compounds.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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