MgB2
MgB2 has a DFT band gap of Metallic / not reported across 55 reported structures in 16 space groups. Cross-validated across 3 computational databases.
At a glance
Key Properties
Cross-validated computational properties for MgB2, aggregated across 3 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.
0.000 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.
On hull (stable)
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
55
3 databases, 16 space groups
Synthesis
Synthesis Routes
Literature-extracted synthesis procedures targeting MgB2.
Sol Gel
Procedure available · ceder_sol_gel
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Intellectual Property
Patent Landscape
14 patents reference MgB2 or close compositional variants.
| Patent | Title | Assignee | Granted |
|---|---|---|---|
| 8709961 | Method for superconducting connection between MgB2 superconducting wires via a MgB2 matrix made from a boron p | — | — |
| 8420558 | Superconducting connection between MgB2 superconducting wires via a compressed element made from HTS powder | — | — |
| 10128024 | MgB2-based superconducting wire for a liquid hydrogen level sensor, a liquid hydrogen level sensor, and a liqu | — | — |
| 6957480 | Method for the production of superconductive wires based on hollow filaments made of MgB2 | — | — |
| 7337527 | Method including a heat treatment of manufacturing superconducting wires based on MgB2 | — | — |
| 9224937 | Precursor of MgB2 superconducting wire, and method for producing the same | — | — |
| 6953770 | MgB2—based superconductor with high critical current density, and method for manufacturing the same | — | — |
| 11551832 | Superconductor wire based on MgB2 core with AI based sheath and method of its production | — | — |
| 7396506 | Method for the preparation of highly densified superconductor massive bodies of MgB2, relevant solid end-produ | — | — |
| 8173579 | Fabrication method of a MgB2 superconducting tape and wire | — | — |
Reference
Frequently Asked Questions
Common questions about MgB2, answered from cross-validated data.
What is the band gap of MgB2?
MgB2 is computed to be metallic (no band gap) in the reported DFT structures.
More questions
Is MgB2 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is MgB2 thermodynamically stable?
Yes — MgB2 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of MgB2 are known?
55 structures of MgB2 are reported across 3 databases, spanning 16 distinct space groups.
How is MgB2 synthesized?
Literature-reported routes for MgB2 include sol gel, solid state (10 procedures documented).
What elements does MgB2 contain?
MgB2 contains B and Mg (2 elements).
Where does the data for MgB2 come from?
MgB2 data is cross-referenced from latticegraph.
Explore
Related Compounds
Other Transition-Metal Borides in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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