LaScO3
Lanthanum scandate · LSO
Lanthanum scandate is a crystalline ceramic material belonging to the perovskite family. It is primarily utilized in advanced electronics as a high-permittivity dielectric material for insulating layers in semiconductor devices.
Key Properties
Cross-validated computational properties for Lanthanum scandate, 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 LaScO3, 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. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 3.90 | 0.0000 | -9.173 | 5.76 |
| Pm-3m (No. 221) | cubic | 2.82 | 0.2041 | -8.969 | 5.67 |
| Pm-3m (No. 221) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.67 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.76 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.85 |
Synthesis Routes
Literature-extracted synthesis procedures targeting LaScO3.
Applications
Where Lanthanum scandate is used.
Frequently Asked Questions
Common questions about Lanthanum scandate, answered from cross-validated data.
What is LaScO3?
Lanthanum scandate is a crystalline ceramic material belonging to the perovskite family. It is primarily utilized in advanced electronics as a high-permittivity dielectric material for insulating layers in semiconductor devices.
What is LaScO3 used for?
What is the band gap of LaScO3?
Is LaScO3 a metal, semiconductor, or insulator?
Is LaScO3 thermodynamically stable?
What is the crystal structure of LaScO3?
What is the density of LaScO3?
How many polymorphs of LaScO3 are known?
How is LaScO3 synthesized?
What elements does LaScO3 contain?
Where does the data for LaScO3 come from?
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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