Y2O3 — Properties & Data | MatWorld

Y2O3

Name: Y2O3
Brand: MatWorld

semiconductor

· Y2O3

Yttria (Y₂O₃) is a ceramic oxide compound and rare-earth material widely used as a high-performance refractory and optical ceramic. It is employed in thermal barrier coatings for aerospace turbines, solid-state laser hosts, optical windows for infrared applications, and as a stabilizing agent in zirconia-based ceramics for demanding thermal and chemical environments. Engineers select Y₂O₃ for its exceptional melting point, chemical inertness, and transparency in the infrared spectrum, making it irreplaceable in applications requiring thermal stability above 2000°C or specialized optical properties.

Thermal barrier coatingsGas turbine componentsSolid-state lasersInfrared optical windowsHigh-temperature refractoriesZirconia stabilization

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	137.7	GPa	DFT
↳	151.8	GPa	DFT · OptB88vdW
↳	137.7	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.1025	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)2 entries	0.3500	-	DFT · OptB88vdW
↳	0.3057	-	DFT · PBE
Shear Modulus(G)3 entries	61.50	GPa	DFT
↳	67.45	GPa	DFT · OptB88vdW
↳	61.50	GPa	DFT · PBE

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

Property	Value	Unit	Conditions	Source
Density(ρ)	5.424	kg/m³	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	5.600	eV	Measured
↳	1.751	eV	DFT · PBE
↳	4.307	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	19.78	-	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	0.000560	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000447	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-129	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	407.2	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)	0.06730	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-2.888	eV/atom	DFT
↳	-3.793	eV/atom	DFT · OptB88vdW
↳	-3.949	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.

Y2O3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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