GePt
GePt is a stable, metallic intermetallic compound of germanium and platinum used primarily in research for catalytic applications.
About GePt
GePt is a metallic intermetallic compound belonging to the platinum-group alloy catalyst family. Its position on the convex hull indicates high thermodynamic stability, making it a robust candidate for demanding chemical environments where structural integrity is paramount. Its metallic nature allows for efficient electron transport, which is a critical feature for surface-mediated reactions. The extensive structural data available for this compound underscores its significance in solid-state chemistry research and materials design. It is primarily investigated for its potential to replace or enhance traditional noble metal catalysts in industrial processes.
Key Properties
Cross-validated computational properties for GePt, aggregated across 6 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 GePt. 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 GePt, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -0.455 | — |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -0.455 | — |
| — | — | 0.00 | 0.0000 | -0.475 | — |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -33.166 | 13.55 |
| Pnma (No. 62) | orthorhombic | 0.00 | 0.0000 | -0.455 | — |
| — | — | 0.00 | 0.0340 | -0.441 | — |
| — | — | 0.00 | 0.2584 | -0.217 | — |
| — | — | 0.00 | 0.2623 | -0.213 | — |
| — | — | 0.00 | 0.2682 | -0.207 | — |
| — | — | 0.00 | 0.2920 | -0.183 | — |
| — | — | 0.00 | 0.3202 | -0.155 | — |
| — | — | 0.00 | 0.3431 | -0.132 | — |
Applications
Where GePt is used.
Frequently Asked Questions
Common questions about GePt, answered from cross-validated data.
What is GePt?
GePt is a stable, metallic intermetallic compound of germanium and platinum used primarily in research for catalytic applications.
What is GePt used for?
What is the band gap of GePt?
Is GePt a metal, semiconductor, or insulator?
Is GePt thermodynamically stable?
What is the crystal structure of GePt?
How many polymorphs of GePt are known?
What elements does GePt contain?
Where does the data for GePt come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse class of platinum-group alloys, GePt stands out as a thermodynamically stable phase compared to some of its more complex or less stable siblings like GeRu or Ga2Ru. While many members of this group are explored for their specific magnetic or electronic properties, GePt is particularly noted for its structural reliability and potential for catalytic activity in harsh conditions.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
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