Lu2S3

ceramic

· JVASP-9140· Lu2S3

Lu2S3 is a rare-earth sulfide ceramic compound combining lutetium (the heaviest stable lanthanide) with sulfur, forming a dense ionic ceramic with high mechanical stiffness. While primarily a research material rather than a commercial commodity, Lu2S3 belongs to the rare-earth sulfide family, which shows promise in applications requiring high refractive index, thermal stability, and radiation resistance in extreme environments. Its potential lies in optical coatings, nuclear fuel matrices, and high-temperature structural applications where the unique properties of lutetium-based compounds offer advantages over more conventional ceramic oxides.

optical coatings and windowsnuclear fuel systemshigh-temperature refractory applicationsresearch and developmentinfrared transparent ceramicsradiation-resistant materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	12,101.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	4,776.1	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2270	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.610	eV	DFT · OptB88vdW
↳	3.460	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.627	-	DFT · OptB88vdW
↳	5.303	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.437	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.180	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00289	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00161	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-349.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	296.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.450	%	DFT · TBmBJ

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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.213	eV/atom	DFT · OptB88vdW

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

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.

Lu2S3 — Properties & Data | MatWorld

Lu2S3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental