Er2 O3

ceramic

· Er2 O3

Erbium oxide (Er₂O₃) is a rare-earth ceramic compound valued for its optical transparency in the infrared spectrum and high thermal stability. It is primarily used in optical applications such as fiber amplifiers and laser systems, as well as in phosphor materials for lighting and displays, and increasingly in advanced ceramics for high-temperature structural applications. Engineers select Er₂O₃ when infrared transmission, thermal resistance, or rare-earth optical properties are critical requirements that conventional ceramics cannot meet.

fiber optic amplifiersinfrared optics and lenseshigh-temperature ceramicsphosphor materialslaser systemsrefractory applications

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	162.5	GPa	—
Shear Modulus(G)	72.34	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	4.423	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-3.838	eV/atom	—

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

Regulatory Screening

Environmental

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.

Er2 O3

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental