BaAl4S7 — Properties & Data | MatWorld

BaAl4S7

Name: BaAl4S7
Brand: MatWorld

metal

· JVASP-27525· BaAl4S7

BaAl4S7 is a barium aluminum sulfide compound belonging to the metal sulfide family, though it may exhibit semi-metallic or intermetallic characteristics depending on its crystal structure and bonding. This material is primarily of research interest rather than established industrial use, with potential applications in specialized ceramics, solid-state chemistry, and functional materials research. The barium-aluminum-sulfur system is investigated for its thermal stability, electrical properties, and potential use in advanced composite materials or specialized coatings where sulfide-based compounds offer advantages over conventional oxides.

experimental ceramicsmaterials researchsolid-state compoundsfunctional materials developmentsulfide-based systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.843	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.102	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	12.79	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.457	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.3887	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00125	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000798	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-133.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	280.3	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)	-1.488	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

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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.

BaAl4S7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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