Mg2PtRh
Mg2PtRh is a thermodynamically stable metallic alloy containing magnesium, platinum, and rhodium used in materials science research.
About Mg2PtRh
Mg2PtRh is a metallic intermetallic compound belonging to the class of platinum-group alloy catalysts. Its position on the convex hull indicates that it is a thermodynamically stable phase, making it a robust candidate for research into catalytic surface interactions and structural stability. The material is characterized by its distinct electronic properties, which are typical of metallic alloys containing noble metals. Because of its structural reliability and the presence of platinum and rhodium, it is of significant interest for applications requiring stable, conductive, and catalytically active surfaces. Its well-documented structural landscape across multiple databases highlights its importance in the study of complex ternary alloy systems.
Key Properties
Cross-validated computational properties for Mg2PtRh, 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 Mg2PtRh, 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. |
|---|---|---|---|---|---|
| Fm-3m (No. 225) | cubic | 0.00 | 0.0000 | -4.862 | 9.65 |
| Fm-3m (No. 225) | — | — | — | — | — |
| Fm-3m (No. 225) | — | — | — | — | — |
| — | — | — | — | — | 9.01 |
| — | — | — | — | — | — |
| Imm2 (No. 44) | — | — | — | — | — |
| — | — | — | — | — | 8.79 |
| — | — | — | — | — | 8.79 |
| — | — | — | — | — | — |
| — | — | — | — | — | — |
| — | — | — | — | — | — |
Applications
Where Mg2PtRh is used.
Frequently Asked Questions
Common questions about Mg2PtRh, answered from cross-validated data.
What is Mg2PtRh?
Mg2PtRh is a thermodynamically stable metallic alloy containing magnesium, platinum, and rhodium used in materials science research.
What is Mg2PtRh used for?
What is the band gap of Mg2PtRh?
Is Mg2PtRh a metal, semiconductor, or insulator?
Is Mg2PtRh thermodynamically stable?
What is the crystal structure of Mg2PtRh?
What is the density of Mg2PtRh?
How many polymorphs of Mg2PtRh are known?
What elements does Mg2PtRh contain?
Where does the data for Mg2PtRh come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group alloys, Mg2PtRh stands out for its specific stoichiometry and thermodynamic stability compared to other members like LaRh or GeRu. While many alloys in this class are explored for their specific magnetic or electronic transitions, Mg2PtRh is primarily noted for its stability and metallic nature, contrasting with the varied structural motifs found in compounds such as IrSe2 or As2Pt.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- omat24 — Data from OMat24 (Meta FAIR). Cite: Barroso-Luque et al., arXiv 2410.12771 (2024).
- alexandria — Data from alexandria.
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