Na4P4Sr4
Na4P4Sr4 is a stable, semiconducting quaternary compound containing sodium, phosphorus, and strontium.
About Na4P4Sr4
Na4P4Sr4 is a complex inorganic compound composed of sodium, phosphorus, and strontium. As a thermodynamically stable phase located on the convex hull, it represents a robust crystalline arrangement that maintains structural integrity under standard conditions.
This material exhibits semiconducting electronic characteristics, making it an interesting candidate for study in electronic and optoelectronic applications. Its unique composition allows for specialized interactions between the alkali metal, alkaline earth metal, and pnictogen components.
Key Properties
Cross-validated computational properties for Na4P4Sr4, 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.
Reported Structures
Lowest-energy structures reported for Na4P4Sr4, 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. |
|---|---|---|---|---|---|
| P-62m (No. 189) | hexagonal | 1.24 | 0.0000 | -10.201 | 3.09 |
| — | — | — | — | — | 2.81 |
Applications
Where Na4P4Sr4 is used.
Patent Landscape
3 patents reference Na4P4Sr4 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8248032 | Charging system for prioritizing load consumption in a notebook computer | — | — |
| 8263193 | Vacuum treatment method | — | — |
| 8268035 | Process for producing refractory metal alloy powders | — | — |
Frequently Asked Questions
Common questions about Na4P4Sr4, answered from cross-validated data.
What is Na4P4Sr4?
Na4P4Sr4 is a stable, semiconducting quaternary compound containing sodium, phosphorus, and strontium.
What is Na4P4Sr4 used for?
What is the band gap of Na4P4Sr4?
Is Na4P4Sr4 a metal, semiconductor, or insulator?
Is Na4P4Sr4 thermodynamically stable?
What is the crystal structure of Na4P4Sr4?
What is the density of Na4P4Sr4?
How many polymorphs of Na4P4Sr4 are known?
What elements does Na4P4Sr4 contain?
Where does the data for Na4P4Sr4 come from?
How It Compares
As a distinct quaternary phase, Na4P4Sr4 occupies a unique position in materials science. Without direct structural siblings in its immediate class, it serves as a foundational example of how combining these specific elements can result in a stable, semiconducting framework.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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