Al1Li1Sr2
Al1Li1Sr2 is a semimetallic ternary intermetallic compound composed of aluminum, lithium, and strontium.
About Al1Li1Sr2
Al1Li1Sr2 is a complex ternary intermetallic compound composed of aluminum, lithium, and strontium. Its electronic structure exhibits near-zero-gap characteristics, placing it in the category of semimetallic materials that bridge the gap between conductors and semiconductors.
Due to its position above the thermodynamic hull, this compound is considered metastable, suggesting it may require specific synthesis conditions to stabilize. With numerous reported structural variations in materials databases, it remains a subject of interest for researchers investigating the phase space of light-metal alloys.
Key Properties
Cross-validated computational properties for Al1Li1Sr2, 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 Al1Li1Sr2, 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. |
|---|---|---|---|---|---|
| Immm (No. 71) | orthorhombic | 0.03 | 1.5185 | -8.457 | 0.23 |
| Fm-3m (No. 225) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| P4/mmm (No. 123) | — | — | — | — | — |
| R-3m (No. 166) | — | — | — | — | — |
| I4/mmm (No. 139) | — | — | — | — | — |
| F-43m (No. 216) | — | — | — | — | — |
| Cm (No. 8) | — | — | — | — | — |
| Pmmm (No. 47) | — | — | — | — | — |
| Pm (No. 6) | — | — | — | — | — |
Frequently Asked Questions
Common questions about Al1Li1Sr2, answered from cross-validated data.
What is Al1Li1Sr2?
Al1Li1Sr2 is a semimetallic ternary intermetallic compound composed of aluminum, lithium, and strontium.
What is the band gap of Al1Li1Sr2?
Is Al1Li1Sr2 a metal, semiconductor, or insulator?
Is Al1Li1Sr2 thermodynamically stable?
What is the crystal structure of Al1Li1Sr2?
What is the density of Al1Li1Sr2?
How many polymorphs of Al1Li1Sr2 are known?
What elements does Al1Li1Sr2 contain?
Where does the data for Al1Li1Sr2 come from?
How It Compares
As a unique ternary phase, Al1Li1Sr2 serves as a specialized example of how aluminum, lithium, and strontium interact within a crystalline lattice, representing a distinct point in the broader landscape of complex intermetallic systems.
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).
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