LiMg
LiMg is a thermodynamically stable metallic compound formed from lithium and magnesium.
About LiMg
LiMg is a metallic intermetallic compound composed of lithium and magnesium. As a thermodynamically stable phase residing on the convex hull, it represents a robust structural arrangement that is frequently investigated in fundamental materials research.
Due to its metallic nature and structural simplicity, this compound serves as a key subject for understanding alloy behavior. With a significant number of reported structures across multiple databases, it remains a highly documented example of binary metal systems.
Key Properties
Cross-validated computational properties for LiMg, aggregated across 5 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 LiMg. 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 LiMg, 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. |
|---|---|---|---|---|---|
| Imma (No. 74) | orthorhombic | 0.00 | 0.0000 | -3.330 | 1.29 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.0007 | -3.330 | 1.28 |
| Pmma (No. 51) | orthorhombic | 0.00 | 0.0020 | -3.328 | 1.28 |
| Amm2 (No. 38) | orthorhombic | 0.00 | 0.0023 | -3.328 | 1.29 |
| Cm (No. 8) | monoclinic | 0.00 | 0.0061 | -3.324 | 1.28 |
| Pm-3m (No. 221) | cubic | 0.00 | 0.0065 | -3.324 | 1.30 |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.0068 | -3.323 | 1.27 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0112 | -3.319 | 1.27 |
| Cmmm (No. 65) | orthorhombic | 0.00 | 0.0191 | -3.311 | 1.25 |
| C2/m (No. 12) | monoclinic | 0.00 | 0.0209 | -3.309 | 1.24 |
| Amm2 (No. 38) | orthorhombic | 0.00 | 0.0238 | -3.306 | 1.24 |
| C2 (No. 5) | monoclinic | 0.00 | 0.0244 | -3.306 | 1.24 |
Applications
Where LiMg is used.
Frequently Asked Questions
Common questions about LiMg, answered from cross-validated data.
What is LiMg?
LiMg is a thermodynamically stable metallic compound formed from lithium and magnesium.
What is LiMg used for?
What is the band gap of LiMg?
Is LiMg a metal, semiconductor, or insulator?
Is LiMg thermodynamically stable?
What is the crystal structure of LiMg?
What is the density of LiMg?
How many polymorphs of LiMg are known?
What elements does LiMg contain?
Where does the data for LiMg come from?
How It Compares
As a binary intermetallic, LiMg serves as a foundational model for studying the interactions between light metal elements. It provides a baseline for understanding the phase stability and structural diversity inherent in lithium-magnesium alloy systems.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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