K2TaAgS4 — Properties & Data | MatWorld

K2TaAgS4

metal

· JVASP-11376· K2TaAgS4

K2TaAgS4 is an experimental ternary compound combining potassium, tantalum, silver, and sulfur—a metal sulfide belonging to the family of transition-metal chalcogenides. This material is primarily of research interest rather than established industrial use, with potential applications in solid-state chemistry and materials science where mixed-valence or mixed-metal systems offer unique electronic or ionic transport properties.

research and developmentsolid-state chemistrychalcogenide compoundsionic conductivity studiesthin-film deposition researchexploratory material synthesis

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1360	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.550	eV	DFT · OptB88vdW
↳	3.071	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.397	-	DFT · OptB88vdW
↳	4.433	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.307	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.080	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000728	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00128	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-304.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	268.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.800	%	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)	-1.132	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

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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.

K2TaAgS4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

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