Pm2S3
Promethium sulfide is a rare inorganic compound composed of the radioactive element promethium and sulfur. Due to the scarcity and radioactivity of promethium, this material is primarily studied for its fundamental chemical properties in specialized research environments.
Key Properties
Cross-validated computational properties for Pm2S3, 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.
Reported Structures
Lowest-energy structures reported for Pm2S3, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| R-3c (No. 167) | trigonal | 2.42 | 0.0000 | -18.970 | 4.65 |
| R-3c (No. 167) | — | — | — | — | — |
| R-3c (No. 167) | — | — | — | — | — |
| R-3c (No. 167) | Trigonal | — | — | — | 4.74 |
| R-3c (No. 167) | Trigonal | — | — | — | 4.62 |
| R-3c (No. 167) | Trigonal | — | — | — | 4.70 |
Applications
Where Pm2S3 is used.
Frequently Asked Questions
Common questions about Pm2S3, answered from cross-validated data.
What is Pm2S3?
Promethium sulfide is a rare inorganic compound composed of the radioactive element promethium and sulfur. Due to the scarcity and radioactivity of promethium, this material is primarily studied for its fundamental chemical properties in specialized research environments.
What is Pm2S3 used for?
What is the band gap of Pm2S3?
Is Pm2S3 a metal, semiconductor, or insulator?
Is Pm2S3 thermodynamically stable?
What is the crystal structure of Pm2S3?
What is the density of Pm2S3?
How many polymorphs of Pm2S3 are known?
What elements does Pm2S3 contain?
Where does the data for Pm2S3 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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