FeAsS
Arsenopyrite · Mispickel
Arsenopyrite is a stable, naturally occurring iron arsenic sulfide mineral that functions as a semiconductor.
About Arsenopyrite
Arsenopyrite is a naturally occurring iron arsenic sulfide that serves as the most common arsenic-bearing mineral. Its structure is characterized by high thermodynamic stability, placing it firmly on the convex hull of the iron-arsenic-sulfur system. As a semiconducting material, it represents a fundamental building block in the study of iron-based chemical systems.
Beyond its geological significance, this compound is a critical subject for understanding phase stability and structural transitions in iron-based compounds. Its widespread occurrence and structural robustness make it a primary reference point for researchers investigating the complex interplay between iron, arsenic, and sulfur in solid-state chemistry.
Key Properties
Cross-validated computational properties for Arsenopyrite, 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 Arsenopyrite is used.
Frequently Asked Questions
Common questions about Arsenopyrite, answered from cross-validated data.
What is FeAsS?
Arsenopyrite is a stable, naturally occurring iron arsenic sulfide mineral that functions as a semiconductor.
What is FeAsS used for?
What is the band gap of FeAsS?
Is FeAsS a metal, semiconductor, or insulator?
Is FeAsS thermodynamically stable?
How many polymorphs of FeAsS are known?
What elements does FeAsS contain?
Where does the data for FeAsS come from?
How It Compares
Within the iron-based superconductors class.
Unlike the metallic or superconducting phases often explored in the iron-based class, such as FeSe, arsenopyrite exhibits a distinct semiconducting electronic character. While many iron-chalcogenides like FeSe2 or FeTe2 are studied for their potential in thin-film photovoltaics or magnetic applications, FeAsS remains a remarkably stable, naturally occurring benchmark that contrasts with the more synthetic, highly reactive members of the iron-based family.
Related Compounds
Other Iron-Based Superconductors in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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