Hf3N4
Hf3N4 is a stable, semiconducting ultra-high-temperature ceramic material characterized by its robust structural properties.
About Hf3N4
Hafnium nitride, specifically the Hf3N4 stoichiometry, represents a significant member of the ultra-high-temperature ceramic family. Its electronic character as a semiconductor distinguishes it from many metallic nitrides, offering unique potential for specialized electronic applications in harsh conditions.
As a thermodynamically stable phase residing on the convex hull, this compound exhibits robust structural integrity. With extensive documentation across multiple databases, it is a well-characterized material of interest for researchers seeking high-performance ceramics capable of maintaining stability under extreme thermal stress.
Key Properties
Cross-validated computational properties for Hf3N4, 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 Hf3N4 is used.
Patent Landscape
1 patent reference Hf3N4 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 7498247 | Atomic layer deposition of Hf3N4/HfO2 films as gate dielectrics | — | — |
Frequently Asked Questions
Common questions about Hf3N4, answered from cross-validated data.
What is Hf3N4?
Hf3N4 is a stable, semiconducting ultra-high-temperature ceramic material characterized by its robust structural properties.
What is Hf3N4 used for?
What is the band gap of Hf3N4?
Is Hf3N4 a metal, semiconductor, or insulator?
Is Hf3N4 thermodynamically stable?
How many polymorphs of Hf3N4 are known?
What elements does Hf3N4 contain?
Where does the data for Hf3N4 come from?
How It Compares
Within the ultra-high-temperature ceramics class.
Within the class of ultra-high-temperature ceramics, Hf3N4 occupies a distinct niche compared to more common refractory carbides like HfC or ZrC. While many siblings in this group, such as TaN or various zirconium-carbon phases, often display metallic behavior, Hf3N4 provides a semiconducting alternative that broadens the design space for high-temperature electronic components.
Related Compounds
Other Ultra-High-Temperature Ceramics in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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