KLaS2

ceramic

· KLaS2

KLaS₂ is a rare-earth ceramic compound belonging to the lanthanum sulfide family, a category of materials investigated for high-temperature and specialty optical applications. While detailed commercial production data is limited, materials in this family are explored for their thermal stability, refractory potential, and optical transparency in infrared wavelengths, positioning them as candidates for demanding environments where conventional ceramics reach their performance limits.

infrared optics and windowshigh-temperature refractory coatingsspecialized ceramics researchthermal barrier systemsoptical components

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1262	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)	2.542	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	8.736 range 4.866–12.61median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.324	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.6800	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.063	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00250	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00175	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-252.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	411.2	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.090	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.

KLaS2 — Properties & Data | MatWorld

KLaS2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental