KAuS

metal

· KAuS

KAuS is an intermetallic compound combining potassium, gold, and sulfur—a research material that belongs to the family of multinary metal chalcogenides rather than a conventional engineering alloy. While not yet established in mainstream industrial applications, this compound represents emerging work in solid-state materials where gold's properties are combined with sulfur chemistry, potentially for specialized electronic, catalytic, or optoelectronic devices where unique electronic band structures are desired.

experimental materials researchsolid-state electronicscatalytic applicationsthermoelectric devicestwo-dimensional materials exfoliationspecialized thin films

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,100.9	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	343.8	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3000	-	DFT · OptB88vdW
Shear Modulus(G)	1,518.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1957	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	2.296	eV	DFT · OptB88vdW
↳	3.451	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	18.27	-	DFT · OptB88vdW
↳	13.63	-	DFT · PBE
↳	7.586 range 4.835–10.34median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.461	-	DFT · OptB88vdW
↳	4.240	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.8000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.233	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00216	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00171	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-242	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	287.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.480	%	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)	-0.8401	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.

KAuS — Properties & Data | MatWorld

KAuS

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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