LiBeAs — Properties & Data | MatWorld

LiBeAs

ceramic

· LiBeAs

LiBeAs is a compound ceramic material combining lithium, beryllium, and arsenic elements, belonging to the III–V semiconductor or mixed-valence ceramic family. This is a research-phase material with limited commercial deployment; compounds in this chemical family are investigated for potential applications in optoelectronics, high-frequency devices, and specialized semiconductor contexts where the combination of light elements and arsenic offers unique electronic or photonic properties. Engineers would consider LiBeAs primarily in advanced materials research rather than established production, as beryllium toxicity during processing and the scarcity of reliable manufacturing data make it a niche exploratory choice versus mainstream alternatives like GaAs or InP.

experimental semiconductorsoptoelectronic researchhigh-frequency devicesphotonic materials developmentlaboratory characterizationadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.483	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.217	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	18.00	-	DFT · OptB88vdW
↳	11.62 range 8.725–14.52median of 2 measurements	-	DFT · PBEsol
Electron Effective Mass(m*e)	1.187	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.4533	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00178	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00435	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-170	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	231.9	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)	-0.5307	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.

LiBeAs

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental