GaLaS3
GaLaS3 is a thermodynamically stable, semiconducting ternary sulfide compound composed of gallium, lanthanum, and sulfur.
About GaLaS3
GaLaS3 is a ternary sulfide compound characterized by its stable thermodynamic profile, placing it firmly on the convex hull of its constituent elements. As a semiconducting material, it represents a specialized inorganic structure that bridges the gap between simple binary sulfides and more complex multinary chalcogenides.
This material is of significant interest to researchers investigating the electronic and structural diversity of gallium-lanthanum-sulfur systems. Its stability suggests potential for integration into functional devices where reliable phase behavior is essential for long-term performance in semiconductor applications.
Key Properties
Cross-validated computational properties for GaLaS3, 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of GaLaS3. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for GaLaS3, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 2.24 | 0.0000 | -14.743 | 4.34 |
| Pna21 (No. 33) | orthorhombic | 2.15 | 0.0047 | -14.738 | 4.34 |
| — | — | — | — | — | 3.82 |
| No. 0 | unknown | — | — | — | 1.10 |
Applications
Where GaLaS3 is used.
Frequently Asked Questions
Common questions about GaLaS3, answered from cross-validated data.
What is GaLaS3?
GaLaS3 is a thermodynamically stable, semiconducting ternary sulfide compound composed of gallium, lanthanum, and sulfur.
What is GaLaS3 used for?
What is the band gap of GaLaS3?
Is GaLaS3 a metal, semiconductor, or insulator?
Is GaLaS3 thermodynamically stable?
What is the crystal structure of GaLaS3?
What is the density of GaLaS3?
How many polymorphs of GaLaS3 are known?
What elements does GaLaS3 contain?
Where does the data for GaLaS3 come from?
How It Compares
As a unique ternary sulfide, GaLaS3 serves as a foundational example of how lanthanum and gallium can combine to form stable, semiconducting frameworks. It occupies a distinct niche in materials science, providing a benchmark for structural stability within the broader family of rare-earth gallium chalcogenides.
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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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