La2Zn4
La2Zn4 is a thermodynamically stable metallic intermetallic compound formed from lanthanum and zinc.
About La2Zn4
La2Zn4 is a distinct intermetallic compound composed of lanthanum and zinc. As a metallic phase, it exhibits the characteristic conductivity and bonding behavior associated with its constituent elements, making it a subject of interest for fundamental structural studies.
This compound is notable for its thermodynamic stability, as evidenced by its position on the convex hull. Its structural diversity is well-documented, with numerous reported configurations across multiple databases, highlighting its significance in the study of rare-earth zinc systems.
Key Properties
Cross-validated computational properties for La2Zn4, 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.
Reported Structures
Lowest-energy structures reported for La2Zn4, 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 | -16.254 | 6.75 |
| Imma (No. 74) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| P63/mmc (No. 194) | — | — | — | — | — |
| I4/mcm (No. 140) | — | — | — | — | — |
| P6/mmm (No. 191) | — | — | — | — | — |
| Immm (No. 71) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
| C2/m (No. 12) | — | — | — | — | — |
| — | — | — | — | — | 6.22 |
| C2/m (No. 12) | — | — | — | — | — |
| Cmcm (No. 63) | — | — | — | — | — |
Applications
Where La2Zn4 is used.
Frequently Asked Questions
Common questions about La2Zn4, answered from cross-validated data.
What is La2Zn4?
La2Zn4 is a thermodynamically stable metallic intermetallic compound formed from lanthanum and zinc.
What is La2Zn4 used for?
What is the band gap of La2Zn4?
Is La2Zn4 a metal, semiconductor, or insulator?
Is La2Zn4 thermodynamically stable?
What is the crystal structure of La2Zn4?
What is the density of La2Zn4?
How many polymorphs of La2Zn4 are known?
What elements does La2Zn4 contain?
Where does the data for La2Zn4 come from?
How It Compares
As a stable intermetallic phase, La2Zn4 serves as a representative example of the complex structural landscape found within lanthanum-zinc binary systems, where the interplay between rare-earth and transition metal atoms dictates its unique physical properties.
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).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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