Ac₂O₃ (actinium oxide) is a rare-earth ceramic compound and wide-bandgap semiconductor with a dense crystal structure. While primarily a research material due to actinium's scarcity and radioactivity, it represents an important member of the lanthanide/actinide oxide family being investigated for high-temperature electronics, radiation-resistant applications, and specialized optical devices where extreme stability is required.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 111.9 | GPa | — | ||
Poisson's Ratio(ν) | 0.3300 | - | — | ||
Shear Modulus(G) | 45.76 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 9.055 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 0.3320 | eV | — | ||
| ↳ | 3.765 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 24.46 | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -232.7 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -2.732 | eV/atom | — | ||
| ↳ | -3.583 | eV/atom | — |