Sm2O3
semiconductor· Sm2O3
Samarium oxide (Sm₂O₃) is a rare-earth ceramic compound belonging to the lanthanide oxide family, valued for its semiconducting and optical properties at elevated temperatures. It is used primarily in advanced optoelectronic devices, solid-state lasers, phosphors for display technologies, and as a component in high-temperature ceramics and refractory applications where thermal stability and chemical resistance are critical. Sm₂O₃ is notable for enabling functionality in harsh thermal environments where conventional semiconductors would fail, making it a key material for aerospace, nuclear, and high-energy physics instrumentation.
solid-state lasers and photonicshigh-temperature ceramicsnuclear reactor materialsoptical phosphors and scintillatorsrefractory coatingsrare-earth device engineering
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 108.4 | GPa | — | ||
Poisson's Ratio(ν) | 0.3200 | - | — | ||
Shear Modulus(G) | 47.34 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.793 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)3 entries | 5.000 | eV | — | ||
| ↳ | 1.391 | eV | — | ||
| ↳ | 1.568 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 20.27 | - | — | ||
Magnetic Moment(μB)2 entries | 0.000 | μB | — | ||
| ↳ | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -249.8 | 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) | 0.2205 | eV/atom | — | ||
Formation Energy(ΔHf)3 entries | -2.766 | eV/atom | — | ||
| ↳ | -3.778 | eV/atom | — | ||
| ↳ | -3.451 | 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.