MnN
MnN is a semimetallic manganese nitride compound that is considered a viable candidate for experimental synthesis due to its favorable thermodynamic stability.
About MnN
MnN is a binary manganese nitride that exhibits semimetallic electronic behavior. Its near-zero-gap character suggests unique charge carrier dynamics that distinguish it from traditional insulating nitrides. The material is characterized by a high degree of structural complexity, supported by a vast array of reported configurations across various databases. Being situated near the thermodynamic hull, it is considered a promising candidate for experimental synthesis and further investigation into its physical properties. Its role as a stable or near-stable phase makes it a subject of significant interest for researchers exploring transition metal nitrides.
Key Properties
Cross-validated computational properties for MnN, 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 MnN. 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 MnN, 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. |
|---|---|---|---|---|---|
| F-43m (No. 216) | cubic | 0.06 | 0.0000 | -0.440 | — |
| — | — | 0.00 | 0.0000 | -0.386 | — |
| F-43m (No. 216) | cubic | 0.07 | 0.0002 | -0.440 | — |
| F-43m (No. 216) | cubic | 0.08 | 0.0151 | -12.218 | 6.05 |
| — | — | 0.00 | 0.0801 | -0.306 | — |
| — | — | 0.00 | 0.0810 | -0.305 | — |
| — | — | 0.00 | 0.0826 | -0.303 | — |
| P63mc (No. 186) | hexagonal | 0.00 | 0.0895 | -12.143 | 5.75 |
| Fm-3m (No. 225) | cubic | 0.00 | 0.0897 | -12.143 | 6.47 |
| P63mc (No. 186) | hexagonal | 0.00 | 0.1055 | -0.334 | — |
| Fm-3m (No. 225) | cubic | 0.00 | 0.1273 | -0.313 | — |
| Fm-3m (No. 225) | cubic | 0.00 | 0.1274 | -0.313 | — |
Applications
Where MnN is used.
Frequently Asked Questions
Common questions about MnN, answered from cross-validated data.
What is MnN?
MnN is a semimetallic manganese nitride compound that is considered a viable candidate for experimental synthesis due to its favorable thermodynamic stability.
What is MnN used for?
What is the band gap of MnN?
Is MnN a metal, semiconductor, or insulator?
Is MnN thermodynamically stable?
What is the crystal structure of MnN?
What is the density of MnN?
How many polymorphs of MnN are known?
What elements does MnN contain?
Where does the data for MnN come from?
How It Compares
As a distinct manganese-nitrogen phase, MnN represents a specific structural arrangement within the broader family of transition metal nitrides. It occupies a unique niche due to its semimetallic nature, which differentiates it from more common, wide-gap insulating nitrides often found in industrial coatings or structural ceramics.
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.
Analyze MnN in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 85 source databases.
Explore the Platform →