LaGaO3
Lanthanum gallate · LGO
Lanthanum gallate is a wide-gap insulating oxide used primarily as a substrate for the growth of high-quality thin films in electronic device research.
About Lanthanum gallate
Lanthanum gallate is a wide-gap insulating oxide that functions as a cornerstone material for epitaxial growth in advanced electronic and optoelectronic applications. Its unique structural properties allow it to serve as a high-quality substrate for the deposition of complex thin films, where lattice matching is essential for device performance. Although it is considered a metastable phase, its structural versatility is evidenced by the numerous reported configurations found in scientific databases. This adaptability makes it a valuable subject for researchers exploring oxide-based electronics and interfacial phenomena. The material is particularly noted for its role in supporting the development of high-performance oxide heterostructures, where its insulating nature helps isolate functional layers. By providing a stable template for growth, it enables the precise engineering of electronic properties in integrated circuits and sensor technologies.
Key Properties
Cross-validated computational properties for Lanthanum gallate, 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 LaGaO3, 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 | 3.35 | 0.0325 | -7.660 | 6.96 |
| Pnma (No. 62) | orthorhombic | 3.20 | 0.0375 | -7.655 | 7.00 |
| Imma (No. 74) | orthorhombic | 3.19 | 0.0376 | -7.654 | 7.00 |
| R-3c (No. 167) | trigonal | 3.38 | 0.0381 | -7.654 | 7.01 |
| R3c (No. 161) | trigonal | 3.37 | 0.0386 | -7.653 | 7.00 |
| Pm-3m (No. 221) | cubic | 3.37 | 0.0963 | -7.596 | 7.11 |
| Pm-3m (No. 221) | cubic | 0.00 | 1.4438 | -6.248 | 4.38 |
| R-3c (No. 167) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 6.96 |
| R-3c (No. 167) | Trigonal | — | — | — | 7.39 |
| Pm-3m (No. 221) | — | — | — | — | — |
| R-3c (No. 167) | Trigonal | — | — | — | 7.01 |
Synthesis Routes
Literature-extracted synthesis procedures targeting LaGaO3.
Applications
Where Lanthanum gallate is used.
Frequently Asked Questions
Common questions about Lanthanum gallate, answered from cross-validated data.
What is LaGaO3?
Lanthanum gallate is a wide-gap insulating oxide used primarily as a substrate for the growth of high-quality thin films in electronic device research.
What is LaGaO3 used for?
What is the band gap of LaGaO3?
Is LaGaO3 a metal, semiconductor, or insulator?
Is LaGaO3 thermodynamically stable?
What is the crystal structure of LaGaO3?
What is the density of LaGaO3?
How many polymorphs of LaGaO3 are known?
How is LaGaO3 synthesized?
What elements does LaGaO3 contain?
Where does the data for LaGaO3 come from?
How It Compares
Within the transparent conducting oxides class.
Unlike the highly conductive CdO or the transparent conducting oxides like ZnO and BaSnO3, LaGaO3 is characterized by its wide-gap insulating behavior. While materials such as ZnGa2O4 and ZnCr2O4 often exhibit specific magnetic or semiconducting properties within the broader class of oxides, LaGaO3 is primarily valued for its structural role as a substrate rather than as an active electronic transport material.
Related Compounds
Other Transparent Conducting Oxides in the database.
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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