LaSeF
Lanthanum selenium fluoride is a crystalline inorganic compound belonging to the class of rare-earth chalcogenide halides. It is primarily utilized in advanced materials research, particularly in the study of electronic properties and potential applications in specialized semiconductor or optical technologies.
Key Properties
Cross-validated computational properties for LaSeF, 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 LaSeF, 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. |
|---|---|---|---|---|---|
| P63/mmc (No. 194) | hexagonal | 1.73 | 0.0000 | -19.077 | 6.20 |
| P21/m (No. 11) | Monoclinic | — | — | — | 4.28 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 5.19 |
| P4/nmm (No. 129) | Tetragonal | — | — | — | 6.04 |
| P63/mmc (No. 194) | — | — | — | — | — |
Applications
Where LaSeF is used.
Frequently Asked Questions
Common questions about LaSeF, answered from cross-validated data.
What is LaSeF?
Lanthanum selenium fluoride is a crystalline inorganic compound belonging to the class of rare-earth chalcogenide halides. It is primarily utilized in advanced materials research, particularly in the study of electronic properties and potential applications in specialized semiconductor or optical technologies.
What is LaSeF used for?
What is the band gap of LaSeF?
Is LaSeF a metal, semiconductor, or insulator?
Is LaSeF thermodynamically stable?
What is the crystal structure of LaSeF?
What is the density of LaSeF?
How many polymorphs of LaSeF are known?
What elements does LaSeF contain?
Where does the data for LaSeF come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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