ThAs — Properties & Data | MatWorld

ThAs

ceramic

· JVASP-17535· ThAs

ThAs is a binary ceramic compound composed of thorium and arsenic, belonging to the class of intermetallic ceramics or refractory compounds. This material is primarily of research and specialized industrial interest rather than a commodity engineering ceramic, used in nuclear, semiconductor, and high-temperature applications where the combination of thorium's nuclear properties and arsenic's semiconducting characteristics offers unique functionality. ThAs is notable in contexts requiring materials that can tolerate extreme thermal and radiation environments, though its use is limited by thorium's radioactive nature and regulatory constraints; engineers would select it only when its specific nuclear or electronic properties are essential and conventional alternatives are insufficient.

nuclear fuel matricesradiation-resistant compoundshigh-temperature refractory applicationssemiconductor researchspecialized nuclear materialsresearch and development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	99.63	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3100	-	DFT · OptB88vdW
Shear Modulus(G)	44.30	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	10.35	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.03700	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	19.11	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000159	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000157	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-5.140	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-5.120	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	0.2886	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.140	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.

ThAs

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental