NpSi
NpSi is a metastable metallic compound formed from neptunium and silicon that is studied for its unique structural properties in the context of advanced materials research.
About NpSi
NpSi is a metallic intermetallic compound composed of neptunium and silicon. As a member of the silicon anode materials class, it represents a specialized area of study for researchers investigating actinide-based alloys in advanced electrochemical systems.
Due to its metastable nature, this compound is of significant interest for fundamental materials science research. Its metallic electronic character distinguishes it from many traditional semiconductor-based silicides, making it a unique subject for exploring electron transport and structural stability in complex actinide systems.
Key Properties
Cross-validated computational properties for NpSi, aggregated across 5 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 NpSi. 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.
Applications
Where NpSi is used.
Frequently Asked Questions
Common questions about NpSi, answered from cross-validated data.
What is NpSi?
NpSi is a metastable metallic compound formed from neptunium and silicon that is studied for its unique structural properties in the context of advanced materials research.
What is NpSi used for?
What is the band gap of NpSi?
Is NpSi a metal, semiconductor, or insulator?
Is NpSi thermodynamically stable?
How many polymorphs of NpSi are known?
What elements does NpSi contain?
Where does the data for NpSi come from?
How It Compares
Within the silicon anode materials class.
Within the diverse family of silicon-based materials, NpSi occupies a niche position compared to more common silicides like Mg2Si or MoSi2. While materials such as Si or FeSi are frequently utilized for their well-understood semiconducting or metallic properties, NpSi is distinguished by the inclusion of heavy actinide elements, which introduces unique structural complexities not found in lighter transition metal or alkaline earth silicides.
Related Compounds
Other Silicon Anode Materials in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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