K7NbAs4 — Properties & Data | MatWorld

K7NbAs4

metal

· JVASP-55239· K7NbAs4

K7NbAs4 is an intermetallic compound belonging to the niobium-arsenic family, representing a specialized metallic phase with a defined crystal structure. This material exists primarily in research and experimental contexts rather than established industrial production, with potential interest in high-temperature applications and materials science investigations of refractory intermetallic systems. Engineers would consider this compound for fundamental studies of phase stability, electronic properties, or as a precursor phase in developing advanced alloys where niobium's refractory characteristics and arsenic's electronic properties may offer specific performance benefits.

intermetallic research compoundsrefractory material studieshigh-temperature phase systemselectronic materials developmentmaterials characterizationspecialty metallurgy

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.879	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	1.319	eV	DFT · OptB88vdW
↳	1.784	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	12.93	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.743	-	DFT · OptB88vdW
↳	5.984	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.3055	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000450	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000304	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-346.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	402.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	27.61	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5699	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

Export Control

Quality & Standards

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.

K7NbAs4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control

Quality & Standards