Er2O3

Name: Er2O3
Brand: MatWorld

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	23,568.6	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3400	-	DFT · OptB88vdW
Shear Modulus(G)	10,492	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3104	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	5.420	eV	Measured
↳	1.559	eV	DFT · PBE
↳	4.138	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	18.90	-	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	0.000851	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000674	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-126.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	417	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.1355	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-2.947	eV/atom	DFT
↳	-3.754	eV/atom	DFT · OptB88vdW
↳	-3.934	eV/atom	Measured

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

Er2O3 — Properties & Data | MatWorld

Er2O3

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