Ho2O3
semiconductor· Ho2O3
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.
nuclear control rodslaser phosphor hostshigh-temperature ceramicsrare-earth optical devicesresearch & developmentspecialized refractory applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 159.6 | GPa | — | ||
Poisson's Ratio(ν) | 0.3500 | - | — | ||
Shear Modulus(G) | 69.95 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 9.363 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 5.420 | eV | — | ||
| ↳ | 1.533 | eV | — | ||
| ↳ | 4.342 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 19.08 | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -236.6 | µV/K | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.04410 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.927 | eV/atom | — | ||
| ↳ | -3.899 | eV/atom | — | ||
| ↳ | -3.816 | eV/atom | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.