PmS2
PmS2 is a thermodynamically stable semiconducting compound composed of promethium and sulfur.
About PmS2
PmS2 is a semiconducting sulfide compound containing the rare-earth element promethium. As a thermodynamically stable member of the sulfide family, it sits on the convex hull, indicating robust structural integrity under standard conditions.
With numerous reported structures, this compound serves as a significant subject for studying the electronic and crystallographic behavior of lanthanide-based chalcogenides. Its semiconducting nature makes it a point of interest for fundamental investigations into rare-earth material science.
Key Properties
Cross-validated computational properties for PmS2, aggregated across 2 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 PmS2 is used.
Frequently Asked Questions
Common questions about PmS2, answered from cross-validated data.
What is PmS2?
PmS2 is a thermodynamically stable semiconducting compound composed of promethium and sulfur.
What is PmS2 used for?
What is the band gap of PmS2?
Is PmS2 a metal, semiconductor, or insulator?
Is PmS2 thermodynamically stable?
How many polymorphs of PmS2 are known?
What elements does PmS2 contain?
Where does the data for PmS2 come from?
How It Compares
As a unique sulfide of promethium, PmS2 serves as a foundational example of rare-earth chalcogenide behavior, providing critical insights into the structural diversity of lanthanide-sulfur systems.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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