Ca4Sb2S

ceramic

· JVASP-13291· Ca4Sb2S

Ca4Sb2S is a ternary ceramic compound composed of calcium, antimony, and sulfur, belonging to the family of sulfide ceramics with mixed-metal compositions. This material is primarily of research interest for thermoelectric and solid-state applications, where its crystal structure and electronic properties are being investigated for potential use in energy conversion devices. The compound represents an emerging area of materials science focused on developing alternative thermoelectric materials with earth-abundant elements, though industrial-scale applications remain limited at this stage.

thermoelectric energy conversionsolid-state research compoundssulfide-based semiconductorsthermal management systemsexperimental high-temperature applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1337	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	1.141	eV	DFT · OptB88vdW
↳	1.574	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	50.51	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	10.06	-	DFT · OptB88vdW
↳	8.203	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.557	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5300	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.1042	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00144	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00138	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-354.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	196.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.25	%	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)	0.01370	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.412	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.

Ca4Sb2S — Properties & Data | MatWorld

Ca4Sb2S

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental