LaAs — Properties & Data | MatWorld

LaAs

ceramic

· JVASP-18944· LaAs

Lanthanum arsenide (LaAs) is a III-V semiconductor ceramic compound combining a rare-earth element (lanthanum) with arsenic. It belongs to the family of rare-earth pnictide semiconductors, which are studied primarily in research and development contexts for their potential electronic and optoelectronic properties. LaAs and related rare-earth arsenides are of interest in compound semiconductor research where thermal stability, bandgap engineering, and integration with other III-V materials may offer advantages over conventional semiconductors in specialized high-performance applications.

III-V semiconductor researchRare-earth compound semiconductorsHigh-temperature electronicsOptoelectronic device developmentMaterials integration studiesBandgap engineering applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2167	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.3410	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	15.17	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000317	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000214	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-30.95	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	8.370	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	7.210	%	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)	-1.636	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.

LaAs

Physical Properties

Electrical Properties

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Regulatory Screening

Environmental