HoPt
HoPt is a thermodynamically stable metallic alloy composed of holmium and platinum that is frequently studied for its structural and electronic properties.
About HoPt
HoPt is a distinct intermetallic compound within the platinum-group alloy catalyst family. As a thermodynamically stable phase located on the convex hull, it demonstrates robust structural integrity, which is a critical characteristic for materials intended for high-performance catalytic or electronic applications. Its metallic nature ensures efficient charge transport, making it a subject of interest for researchers investigating the interplay between rare-earth elements and noble metals. With multiple reported structures across various databases, this compound is well-documented in the literature, reflecting its significance in fundamental materials science. Its stability and composition suggest potential utility in specialized chemical processing and advanced alloy development where consistent phase behavior is required.
Key Properties
Cross-validated computational properties for HoPt, 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 HoPt. 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 HoPt, 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 | -43.607 | 13.88 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 13.58 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 13.91 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 13.83 |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 8.95 |
| No. 0 | unknown | — | — | — | 8.91 |
| No. 0 | unknown | — | — | — | 1.37 |
| Pnma (No. 62) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 1.37 |
Applications
Where HoPt is used.
Frequently Asked Questions
Common questions about HoPt, answered from cross-validated data.
What is HoPt?
HoPt is a thermodynamically stable metallic alloy composed of holmium and platinum that is frequently studied for its structural and electronic properties.
What is HoPt used for?
What is the band gap of HoPt?
Is HoPt a metal, semiconductor, or insulator?
Is HoPt thermodynamically stable?
What is the crystal structure of HoPt?
What is the density of HoPt?
How many polymorphs of HoPt are known?
What elements does HoPt contain?
Where does the data for HoPt come from?
How It Compares
Within the platinum-group alloy catalysts class.
Unlike more complex or volatile members of the platinum-group alloy class such as As2Pt or Ga2Ru, HoPt maintains a high degree of thermodynamic stability that simplifies its synthesis and characterization. While many siblings in this group exhibit diverse stoichiometry, HoPt represents a stable binary configuration that serves as a reliable reference point for studying the electronic properties of holmium-platinum systems compared to other rare-earth or transition metal combinations like LaRh.
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).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- nomad — Data from NOMAD. Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019).
Analyze HoPt in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →