F8Mg2Sr2
F8Mg2Sr2 is an insulating ternary fluoride compound that is theoretically stable and potentially synthesizable.
About F8Mg2Sr2
F8Mg2Sr2 is a complex fluoride compound composed of magnesium, strontium, and fluorine. Its electronic structure is characterized as a wide-band-gap insulator, suggesting high transparency and electrical resistance typical of stable ionic fluoride lattices.
This material is considered near-hull, indicating that it is thermodynamically competitive and likely synthesizable under appropriate laboratory conditions. Its structural diversity, evidenced by multiple reported configurations, highlights its potential as a subject for further materials discovery.
Key Properties
Cross-validated computational properties for F8Mg2Sr2, 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.
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 F8Mg2Sr2, 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. |
|---|---|---|---|---|---|
| P21 (No. 4) | monoclinic | 6.69 | 0.0217 | -9.298 | 3.75 |
| Cmc21 (No. 36) | orthorhombic | 6.69 | 0.0246 | -9.295 | 3.76 |
| P21/m (No. 11) | monoclinic | 6.40 | 0.0564 | -9.263 | 3.64 |
| Cmcm (No. 63) | orthorhombic | 6.23 | 0.0565 | -9.263 | 3.64 |
| Cmcm (No. 63) | — | — | — | — | — |
| No. 0 | unknown | — | — | — | 1.95 |
| Cmc21 (No. 36) | orthorhombic | — | — | — | 0.97 |
| P21 (No. 4) | monoclinic | — | — | — | 1.97 |
Applications
Where F8Mg2Sr2 is used.
Frequently Asked Questions
Common questions about F8Mg2Sr2, answered from cross-validated data.
What is F8Mg2Sr2?
F8Mg2Sr2 is an insulating ternary fluoride compound that is theoretically stable and potentially synthesizable.
What is F8Mg2Sr2 used for?
What is the band gap of F8Mg2Sr2?
Is F8Mg2Sr2 a metal, semiconductor, or insulator?
Is F8Mg2Sr2 thermodynamically stable?
What is the crystal structure of F8Mg2Sr2?
What is the density of F8Mg2Sr2?
How many polymorphs of F8Mg2Sr2 are known?
What elements does F8Mg2Sr2 contain?
Where does the data for F8Mg2Sr2 come from?
How It Compares
As a unique fluoride phase, F8Mg2Sr2 occupies a distinct position in the landscape of alkaline-earth metal halides. Unlike more common binary fluorides, this ternary composition offers a complex structural framework that warrants further investigation into its potential as a dielectric or optical material.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- aflow — Data from AFLOW. Cite: Curtarolo et al., Comp. Mater. Sci. 58, 218 (2012).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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