Dy2O3 — Properties & Data | MatWorld

Dy2O3

Name: Dy2O3
Brand: MatWorld

semiconductor

· Dy2O3

Dysprosium oxide (Dy₂O₃) is a rare-earth ceramic compound belonging to the lanthanide oxide family, valued for its high refractive index and optical transparency in the infrared spectrum. It is primarily used in specialized optical components, nuclear reactor control materials, and as a dopant in phosphors and laser systems, where its rare-earth properties enable performance that conventional oxides cannot match. Engineers select Dy₂O₃ when infrared transmission, thermal stability, or neutron-absorbing capability is critical, though its cost and limited availability make it suitable only for high-performance applications where alternatives are insufficient.

infrared optics and windowsnuclear control rod materialsrare-earth phosphorslaser host materialsthermal barrier coatingsspecialized ceramic applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	157.3	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3400	-	DFT · OptB88vdW
Shear Modulus(G)	70.01	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	7.868	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	5.000	eV	Measured
↳	1.645	eV	DFT · PBE
↳	4.084	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	19.19	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.434	-	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	0.000893	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000710	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-215.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	423.1	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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2505	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-2.904	eV/atom	DFT
↳	-3.562	eV/atom	DFT · OptB88vdW
↳	-3.861	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.

Dy2O3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control