Er2O3
semiconductor· Er2O3
Erbium oxide (Er₂O₃) is a rare-earth ceramic compound belonging to the lanthanide oxide family, valued for its optical and thermal properties in advanced applications. It is primarily used in fiber-optic amplifiers for telecommunications, phosphors for displays and lighting, and as a dopant in laser crystals for medical and industrial cutting systems. Engineers select Er₂O₃ when high refractive index combined with transparency in the infrared spectrum is required, or when rare-earth luminescence properties are critical for signal amplification and wavelength conversion in photonic devices.
fiber-optic amplifierslaser crystals (Er:YAG, Er:glass)optical phosphorsinfrared opticsmedical laser systemstelecommunications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 162.5 | GPa | — | ||
Poisson's Ratio(ν) | 0.3400 | - | — | ||
Shear Modulus(G) | 72.34 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 8.593 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 5.420 | eV | — | ||
| ↳ | 1.559 | eV | — | ||
| ↳ | 2.924 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 18.90 | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -248 | 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) | 0.1355 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.947 | eV/atom | — | ||
| ↳ | -3.934 | eV/atom | — | ||
| ↳ | -3.754 | 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.