CeAs2
CeAs2 is a metastable, semimetallic cerium arsenide known for its extensive structural diversity.
About CeAs2
CeAs2 is a cerium-based pnictide characterized by its near-zero-gap electronic structure, placing it in the regime of semimetallic materials. Its complex structural landscape is evidenced by a high degree of polymorphism, reflecting a delicate balance of atomic arrangements within its crystalline framework.
As a metastable compound, it represents a fascinating case study in solid-state chemistry where synthesis conditions play a critical role in stabilizing specific structural phases. Its electronic nature makes it a subject of interest for researchers investigating the interplay between rare-earth magnetism and semimetallic transport properties.
Key Properties
Cross-validated computational properties for CeAs2, aggregated across 3 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 CeAs2 is used.
Frequently Asked Questions
Common questions about CeAs2, answered from cross-validated data.
What is CeAs2?
CeAs2 is a metastable, semimetallic cerium arsenide known for its extensive structural diversity.
What is CeAs2 used for?
What is the band gap of CeAs2?
Is CeAs2 a metal, semiconductor, or insulator?
Is CeAs2 thermodynamically stable?
How many polymorphs of CeAs2 are known?
What elements does CeAs2 contain?
Where does the data for CeAs2 come from?
How It Compares
As a member of the rare-earth arsenide family, CeAs2 stands out for its high structural complexity, with numerous reported phases demonstrating the sensitivity of its lattice to external conditions compared to more conventional, highly stable binary pnictides.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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