BeSiAs2 — Properties & Data | MatWorld

BeSiAs2

ceramic

· BeSiAs2

BeSiAs₂ is a ternary ceramic compound combining beryllium, silicon, and arsenic elements. This material belongs to the family of advanced ceramics with mixed-valence cation structures and is primarily investigated in research contexts for its potential semiconductor and optoelectronic properties. While not widely established in mainstream industrial production, compounds in this chemical family are of interest for specialized applications requiring specific electronic or thermal characteristics in extreme environments.

semiconductor researchwide-bandgap materialshigh-temperature ceramicsoptoelectronic devices (experimental)defense/aerospace applications (emerging)thermal management components (research phase)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1448	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 entries	1.193	eV	DFT · OptB88vdW
↳	1.747	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	11.97	-	DFT · OptB88vdW
↳	11.44 range 10.98–11.90median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	11.03	-	DFT · OptB88vdW
↳	8.907	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4467	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5433	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.4538	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00305	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00284	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-224.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	224.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.39	%	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)	-0.2350	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.

BeSiAs2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental