MgWO3
Magnesium tungstate is an inorganic compound that functions as a ceramic material. It is primarily recognized for its luminescent properties when exposed to specific types of radiation.
MgOW
Overview
Key Properties
Cross-validated computational properties for MgWO3, 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.
0.19–2.44 eV
Range across DFT structures
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.
0.057 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
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
14
3 databases, 8 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for MgWO3, 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. |
|---|---|---|---|---|---|
| P1 (No. 1) | triclinic | 0.96 | 0.0570 | -8.875 | 6.60 |
| Pnma (No. 62) | orthorhombic | 2.44 | 0.0818 | -8.260 | 7.48 |
| P-4 (No. 81) | tetragonal | 0.99 | 0.0851 | -8.847 | 6.39 |
| P1 (No. 1) | triclinic | 0.19 | 0.0900 | -8.842 | 6.27 |
| P-42m (No. 111) | tetragonal | 0.69 | 0.1014 | -8.831 | 6.39 |
| Pmn21 (No. 31) | orthorhombic | 1.11 | 0.1061 | -8.640 | 6.93 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.1391 | -8.793 | 6.14 |
| Im-3 (No. 204) | cubic | 0.00 | 0.1481 | -8.784 | 6.35 |
| P4/mmm (No. 123) | tetragonal | 0.00 | 0.3305 | -8.416 | 6.30 |
| Cm (No. 8) | monoclinic | 0.00 | 0.3976 | -7.944 | 6.21 |
| Cm (No. 8) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 7.48 |
Uses
Applications
Where MgWO3 is used.
Phosphor materialsFluorescent lightingX-ray imaging screens
Reference
Frequently Asked Questions
Common questions about MgWO3, answered from cross-validated data.
What is MgWO3?
Magnesium tungstate is an inorganic compound that functions as a ceramic material. It is primarily recognized for its luminescent properties when exposed to specific types of radiation.
More questions
What is MgWO3 used for?
MgWO3 is used in phosphor materials, fluorescent lighting, and x-ray imaging screens.
What is the band gap of MgWO3?
MgWO3 has a DFT-computed band gap of 0.19–2.44 eV across 14 reported structures.
Is MgWO3 a metal, semiconductor, or insulator?
With a band gap up to 2.44 eV it is a semiconductor.
Is MgWO3 thermodynamically stable?
MgWO3 has a lowest energy above hull of 0.057 eV/atom (metastable).
What is the crystal structure of MgWO3?
The lowest-energy reported polymorph of MgWO3 is triclinic symmetry, space group P1 (No. 1).
What is the density of MgWO3?
The computed density of the ground-state structure of MgWO3 is 6.60 g/cm³.
How many polymorphs of MgWO3 are known?
14 structures of MgWO3 are reported across 3 databases, spanning 8 distinct space groups.
What elements does MgWO3 contain?
MgWO3 contains Mg, O, and W (3 elements).
Where does the data for MgWO3 come from?
MgWO3 data is cross-referenced from materials_project, jarvis, mpaloe.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- mpaloe — Data from mpaloe.
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