TbKS2

ceramic

· JVASP-37073· TbKS2

TbKS₂ is a rare-earth thiospinel ceramic compound composed of terbium, potassium, and sulfur, belonging to the family of sulfide-based ceramics. This material exists primarily in the research domain as an exploratory compound for functional and structural applications where sulfide ceramics offer advantages over traditional oxides, such as enhanced ionic conductivity or specific optical properties. TbKS₂ represents potential use in solid-state ionic devices, luminescent materials, or high-temperature applications where rare-earth-doped thiospinels are being investigated as alternatives to oxide ceramics.

Solid-state ionic conductors (research)Luminescent/phosphor materials (experimental)High-temperature ceramics (development stage)Rare-earth functional ceramicsSulfide-based structural ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	6,924.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)	4,697.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1520	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.369	eV	DFT · OptB88vdW
↳	3.283	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	14.83	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.554	-	DFT · OptB88vdW
↳	4.676	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.6867	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.380	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	0.00325	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00167	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-272.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	269	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.370	%	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)	-2.061	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.

TbKS2 — Properties & Data | MatWorld

TbKS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental