SrLaI5
SrLaI5 is a metastable semiconducting iodide compound currently under investigation for its structural complexity and electronic properties.
About SrLaI5
SrLaI5 is a complex iodide compound characterized by its semiconducting electronic nature. As a metastable material, it represents a unique structural configuration that challenges conventional thermodynamic stability, making it a subject of significant interest for researchers mapping the landscape of ternary halide systems. Its existence across multiple reported structures suggests a rich potential for structural phase transitions and tunable properties. Because of its specific elemental composition, this compound is primarily investigated within fundamental materials science to understand the interplay between strontium and lanthanum in halide frameworks. It serves as a model system for exploring how metastable phases can be stabilized or utilized in specialized electronic or optical applications where traditional, highly stable materials may not offer the desired performance characteristics.
Key Properties
Cross-validated computational properties for SrLaI5, 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 SrLaI5, 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/m (No. 11) | monoclinic | 2.42 | 0.0277 | -3.895 | 4.33 |
| P21/m (No. 11) | monoclinic | 2.11 | 0.0471 | -3.875 | 4.69 |
| Cc (No. 9) | monoclinic | 2.18 | 0.0914 | -3.831 | 5.11 |
| C2/c (No. 15) | monoclinic | 2.14 | 0.0918 | -3.831 | 5.05 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.69 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.38 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.33 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.38 |
| Cc (No. 9) | Monoclinic | — | — | — | 5.11 |
| Cc (No. 9) | Monoclinic | — | — | — | 5.11 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.74 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.74 |
Applications
Where SrLaI5 is used.
Frequently Asked Questions
Common questions about SrLaI5, answered from cross-validated data.
What is SrLaI5?
SrLaI5 is a metastable semiconducting iodide compound currently under investigation for its structural complexity and electronic properties.
What is SrLaI5 used for?
What is the band gap of SrLaI5?
Is SrLaI5 a metal, semiconductor, or insulator?
Is SrLaI5 thermodynamically stable?
What is the crystal structure of SrLaI5?
What is the density of SrLaI5?
How many polymorphs of SrLaI5 are known?
What elements does SrLaI5 contain?
Where does the data for SrLaI5 come from?
How It Compares
As a unique ternary iodide, SrLaI5 occupies a specialized niche within the broader class of lanthanum-strontium halide materials, serving as a distinct example of a metastable semiconductor in a field often dominated by more stable, well-characterized crystalline phases.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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