Al2Na2Se4
This compound is a complex quaternary chalcogenide consisting of sodium, aluminum, and selenium. It is primarily studied in academic research settings for its structural properties and potential utility in solid-state chemistry and materials science investigations.
Key Properties
Cross-validated computational properties for Al2Na2Se4, 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 Al2Na2Se4, 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. |
|---|---|---|---|---|---|
| C2/c (No. 15) | monoclinic | 2.73 | 0.0000 | -10.959 | 3.48 |
| I4/mcm (No. 140) | tetragonal | 2.15 | 0.0209 | -10.938 | 3.75 |
| I4/mcm (No. 140) | — | — | — | — | — |
| I4/mcm (No. 140) | — | — | — | — | — |
| — | — | — | — | — | 2.70 |
Applications
Where Al2Na2Se4 is used.
Frequently Asked Questions
Common questions about Al2Na2Se4, answered from cross-validated data.
What is Al2Na2Se4?
This compound is a complex quaternary chalcogenide consisting of sodium, aluminum, and selenium. It is primarily studied in academic research settings for its structural properties and potential utility in solid-state chemistry and materials science investigations.
What is Al2Na2Se4 used for?
What is the band gap of Al2Na2Se4?
Is Al2Na2Se4 a metal, semiconductor, or insulator?
Is Al2Na2Se4 thermodynamically stable?
What is the crystal structure of Al2Na2Se4?
What is the density of Al2Na2Se4?
How many polymorphs of Al2Na2Se4 are known?
What elements does Al2Na2Se4 contain?
Where does the data for Al2Na2Se4 come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
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