Lanthanum oxide (La₂O₃) is a rare-earth ceramic compound belonging to the lanthanide oxide family, valued for its wide bandgap and high refractive index. It is employed primarily in optical coatings, phosphor applications, and as a high-k dielectric material in advanced semiconductor devices, where it enables miniaturization and improved electrical performance compared to conventional silicon dioxide. The material is also investigated for potential use in solid-state electrolytes and thermal barrier coatings, making it particularly relevant for applications requiring exceptional thermal stability and dielectric properties.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 125.7 | GPa | — | ||
Poisson's Ratio(ν) | 0.3300 | - | — | ||
Shear Modulus(G) | 52.03 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 5.674 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 5.400 | eV | — | ||
| ↳ | 0.5950 | eV | — | ||
| ↳ | 0.8390 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 15.73 range 4.867–26.59median of 2 measurements | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.9273 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.825 | eV/atom | — | ||
| ↳ | -3.721 | eV/atom | — | ||
| ↳ | -2.792 | eV/atom | — |