Holmium oxide (Ho₂O₃) is a rare-earth ceramic compound belonging to the lanthanide oxide family, characterized by high density and significant mechanical stiffness. While primarily used in specialized research and optical applications, Ho₂O₃ serves niche roles in nuclear control materials, phosphor host materials for laser systems, and high-temperature structural applications where rare-earth properties are leveraged. Engineers select this material when rare-earth nuclear absorption, thermal stability, or specific luminescent properties are critical requirements that conventional oxides cannot meet.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 159.6 | GPa | DFT · OptB88vdW | ||
Poisson's Ratio(ν) | 0.3500 | - | DFT · OptB88vdW | ||
Shear Modulus(G) | 69.95 | GPa | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 9.363 | kg/m³ | DFT · OptB88vdW |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 5.420 | eV | Measured | ||
| ↳ | 1.533 | eV | DFT · PBE | ||
| ↳ | 4.094 | eV | DFT · OptB88vdW | ||
Dielectric Constant (Relative Permittivity)(εr) | 19.08 | - | DFT · OptB88vdW | ||
High-Frequency Dielectric Constant (ε∞)(ε∞) | 4.104 | - | DFT · OptB88vdW | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | DFT | ||
| ↳ | 0.000 | µB | DFT · OptB88vdW | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | DFT · OptB88vdW | ||
Thermoelectric Power Factor(PF)2 entries | 0.000702 | W/(m·K²) | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 0.000457 | W/(m·K²) | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C | ||
Seebeck Coefficient(S)2 entries | -116.9 | μV/K | DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C | ||
| ↳ | 412.7 | μV/K | DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.04410 | eV/atom | DFT · OptB88vdW | ||
Formation Energy(ΔHf)3 entries | -2.927 | eV/atom | DFT | ||
| ↳ | -3.816 | eV/atom | DFT · OptB88vdW | ||
| ↳ | -3.899 | eV/atom | Measured |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data