CoRh
Cobalt rhodium is a binary intermetallic compound composed of transition metals. It is primarily studied for its magnetic properties and its potential utility in specialized catalytic processes.
Overview
Key Properties
Cross-validated computational properties for CoRh, 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.
Metallic / not reported
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.
0.082 eV/atom
Best (lowest) across sources
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.
Metastable
4 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
38
6 databases, 11 space groups
Validation
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of CoRh. 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.
1.00 / 1.00
Trust tier: high
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
0.000 eV
EAH spread across sources
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
3
jarvis, materials_project, nomad
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
All match
Crystallography
Reported Structures
Lowest-energy structures reported for CoRh, 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. |
|---|---|---|---|---|---|
| R-3m (No. 166) | trigonal | 0.00 | 0.0824 | -18.603 | 10.32 |
| R3m (No. 160) | Trigonal | — | — | — | 11.39 |
| P-1 (No. 2) | Triclinic | — | — | — | 9.90 |
| P21/m (No. 11) | Monoclinic | — | — | — | 6.45 |
| P21/m (No. 11) | Monoclinic | — | — | — | 8.57 |
| P21/m (No. 11) | Monoclinic | — | — | — | 7.75 |
| — | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 10.58 |
| P-1 (No. 2) | Triclinic | — | — | — | 9.24 |
| Pmmn (No. 59) | Orthorhombic | — | — | — | 11.44 |
| P21/m (No. 11) | Monoclinic | — | — | — | 11.00 |
| R3m (No. 160) | Trigonal | — | — | — | 10.36 |
Uses
Applications
Where CoRh is used.
Magnetic materials researchCatalysis studiesAlloy development
Reference
Frequently Asked Questions
Common questions about CoRh, answered from cross-validated data.
What is CoRh?
Cobalt rhodium is a binary intermetallic compound composed of transition metals. It is primarily studied for its magnetic properties and its potential utility in specialized catalytic processes.
More questions
What is CoRh used for?
CoRh is used in magnetic materials research, catalysis studies, and alloy development.
What is the band gap of CoRh?
CoRh is computed to be metallic (no band gap) in the reported DFT structures.
Is CoRh a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is CoRh thermodynamically stable?
CoRh has a lowest energy above hull of 0.082 eV/atom (metastable).
What is the crystal structure of CoRh?
The lowest-energy reported polymorph of CoRh is trigonal symmetry, space group R-3m (No. 166).
What is the density of CoRh?
The computed density of the ground-state structure of CoRh is 10.32 g/cm³.
How many polymorphs of CoRh are known?
38 structures of CoRh are reported across 6 databases, spanning 11 distinct space groups.
What elements does CoRh contain?
CoRh contains Co and Rh (2 elements).
Where does the data for CoRh come from?
CoRh data is cross-referenced from materials_project, mpaloe, alexandria, nomad, jarvis, cod.
Explore
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.
- alexandria — Data from alexandria.
- 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).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
Analyze CoRh in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →