Cr2Ni
Cr2Ni is a metallic chromium-nickel intermetallic compound that exists in a metastable state.
About Cr2Ni
Cr2Ni is a metallic intermetallic compound composed of chromium and nickel. As a metallic system, it exhibits characteristic electron delocalization and conductivity typical of transition metal alloys.
While it has been documented across multiple structural databases, the compound is characterized as being thermodynamically metastable. Its existence as a phase above the hull suggests that it requires specific synthesis conditions to stabilize its atomic arrangement.
Key Properties
Cross-validated computational properties for Cr2Ni, aggregated across 4 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 Cr2Ni, 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. |
|---|---|---|---|---|---|
| Fd-3m (No. 227) | cubic | 0.00 | 0.2788 | -13.764 | 7.64 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.55 |
| R-3m (No. 166) | Trigonal | — | — | — | 8.63 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.25 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.69 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.62 |
| C2/m (No. 12) | Monoclinic | — | — | — | 8.15 |
| C2/m (No. 12) | Monoclinic | — | — | — | 6.54 |
| Fmmm (No. 69) | Orthorhombic | — | — | — | 10.05 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.07 |
| C2 (No. 5) | Monoclinic | — | — | — | 3.21 |
| C2/m (No. 12) | Monoclinic | — | — | — | 7.68 |
Applications
Where Cr2Ni is used.
Frequently Asked Questions
Common questions about Cr2Ni, answered from cross-validated data.
What is Cr2Ni?
Cr2Ni is a metallic chromium-nickel intermetallic compound that exists in a metastable state.
What is Cr2Ni used for?
What is the band gap of Cr2Ni?
Is Cr2Ni a metal, semiconductor, or insulator?
Is Cr2Ni thermodynamically stable?
What is the crystal structure of Cr2Ni?
What is the density of Cr2Ni?
How many polymorphs of Cr2Ni are known?
What elements does Cr2Ni contain?
Where does the data for Cr2Ni come from?
How It Compares
As a binary transition metal system, Cr2Ni represents a specific stoichiometric point within the broader chromium-nickel phase space. Unlike more stable, widely utilized industrial alloys in this system, Cr2Ni serves primarily as a subject for fundamental studies into phase formation and structural diversity in metallic compounds.
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).
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