HfMn
HfMn is a thermodynamically stable metallic intermetallic compound formed from hafnium and manganese.
About HfMn
HfMn is a metallic intermetallic compound composed of hafnium and manganese. As a thermodynamically stable phase located on the convex hull, it represents a robust structural configuration that is highly favored in the chemical system.
Due to its metallic nature and structural reliability, this compound serves as a significant subject for materials scientists investigating binary alloy systems. Its stability makes it a valuable reference point for understanding phase formation and atomic ordering in transition metal combinations.
Key Properties
Cross-validated computational properties for HfMn, 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 HfMn, 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. |
|---|---|---|---|---|---|
| I41/amd (No. 141) | tetragonal | 0.00 | 0.0000 | -30.073 | 11.26 |
| Fd-3m (No. 227) | cubic | 0.00 | 0.0095 | -30.064 | 11.84 |
| C2/m (No. 12) | Monoclinic | — | — | — | 14.27 |
| P2/m (No. 10) | Monoclinic | — | — | — | 15.80 |
| P212121 (No. 19) | Orthorhombic | — | — | — | 10.33 |
| P213 (No. 198) | Cubic | — | — | — | 10.23 |
| P213 (No. 198) | Cubic | — | — | — | 10.08 |
| P212121 (No. 19) | Orthorhombic | — | — | — | 9.94 |
| P212121 (No. 19) | Orthorhombic | — | — | — | 13.69 |
| P212121 (No. 19) | Orthorhombic | — | — | — | 11.91 |
| P1 (No. 1) | Triclinic | — | — | — | 11.04 |
| Cm (No. 8) | Monoclinic | — | — | — | 10.86 |
Applications
Where HfMn is used.
Frequently Asked Questions
Common questions about HfMn, answered from cross-validated data.
What is HfMn?
HfMn is a thermodynamically stable metallic intermetallic compound formed from hafnium and manganese.
What is HfMn used for?
What is the band gap of HfMn?
Is HfMn a metal, semiconductor, or insulator?
Is HfMn thermodynamically stable?
What is the crystal structure of HfMn?
What is the density of HfMn?
How many polymorphs of HfMn are known?
What elements does HfMn contain?
Where does the data for HfMn come from?
How It Compares
As a distinct binary intermetallic, HfMn occupies a unique position in materials research, serving as a primary example of stable phase formation within its specific elemental system. Its thermodynamic stability distinguishes it as a reliable baseline for evaluating the structural evolution of hafnium-manganese alloys.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
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