Sr3P2
Sr3P2 is a stable, semiconducting binary compound formed from strontium and phosphorus.
About Sr3P2
Sr3P2 is a binary phosphide compound composed of strontium and phosphorus. As a thermodynamically stable material situated on the convex hull, it maintains a robust structural configuration that makes it a subject of interest for fundamental materials research.
Characterized as a semiconductor, this compound offers unique electronic properties suitable for specialized technological development. Its presence across multiple structural databases highlights its significance as a well-documented phase within the strontium-phosphorus system.
Key Properties
Cross-validated computational properties for Sr3P2, 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 Sr3P2, 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. |
|---|---|---|---|---|---|
| I-42d (No. 122) | tetragonal | 0.39 | 0.0000 | -13.905 | 3.53 |
| Pm-3m (No. 221) | cubic | 0.06 | 0.4029 | -13.502 | 2.96 |
| Pm-3m (No. 221) | — | — | — | — | — |
| Pm (No. 6) | Monoclinic | — | — | — | 2.63 |
| Pm (No. 6) | Monoclinic | — | — | — | 2.74 |
| Pm (No. 6) | Monoclinic | — | — | — | 2.84 |
Applications
Where Sr3P2 is used.
Frequently Asked Questions
Common questions about Sr3P2, answered from cross-validated data.
What is Sr3P2?
Sr3P2 is a stable, semiconducting binary compound formed from strontium and phosphorus.
What is Sr3P2 used for?
What is the band gap of Sr3P2?
Is Sr3P2 a metal, semiconductor, or insulator?
Is Sr3P2 thermodynamically stable?
What is the crystal structure of Sr3P2?
What is the density of Sr3P2?
How many polymorphs of Sr3P2 are known?
What elements does Sr3P2 contain?
Where does the data for Sr3P2 come from?
How It Compares
As a distinct binary phosphide, Sr3P2 serves as a foundational example of strontium-based semiconducting materials. Without direct structural siblings in this specific class, it stands as a primary reference point for understanding the electronic and stability trends of alkaline earth metal phosphides.
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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