La2TiO5
La2TiO5 is a stable, insulating perovskite oxide used in materials science research for its structural reliability and electronic properties.
About La2TiO5
La2TiO5 is a structurally robust perovskite oxide that exists as a thermodynamically stable phase. Characterized by its wide-band-gap insulating nature, this compound represents a key material in the study of lanthanum-based titanates where electronic insulation is a primary requirement. Its stability on the convex hull makes it a reliable candidate for high-temperature applications and specialized ceramic components. The material is valued for its structural integrity and its ability to maintain phase stability under varying environmental conditions, contributing to its utility in advanced oxide electronics and dielectric research. It serves as a foundational material for exploring the interplay between rare-earth elements and transition metal oxides.
Key Properties
Cross-validated computational properties for La2TiO5, 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 La2TiO5, 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 | 3.29 | 0.0000 | -9.168 | 5.45 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.36 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.53 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 5.43 |
| No. 0 | unknown | — | — | — | 1.36 |
| No. 0 | unknown | — | — | — | 1.36 |
Applications
Where La2TiO5 is used.
Frequently Asked Questions
Common questions about La2TiO5, answered from cross-validated data.
What is La2TiO5?
La2TiO5 is a stable, insulating perovskite oxide used in materials science research for its structural reliability and electronic properties.
What is La2TiO5 used for?
What is the band gap of La2TiO5?
Is La2TiO5 a metal, semiconductor, or insulator?
Is La2TiO5 thermodynamically stable?
What is the crystal structure of La2TiO5?
What is the density of La2TiO5?
How many polymorphs of La2TiO5 are known?
What elements does La2TiO5 contain?
Where does the data for La2TiO5 come from?
How It Compares
Within the perovskite oxides class.
Unlike the metallic or semi-metallic behavior often seen in siblings like LaNiO3, La2TiO5 is a distinct insulator. While materials such as BaTiO3 are widely utilized for their ferroelectric properties, La2TiO5 occupies a niche as a stable, wide-gap oxide that provides a different electronic profile compared to the magnetic transition metal perovskites like LaMnO3 or LaFeO3.
Related Compounds
Other Perovskite Oxides in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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