NaTmS2 — Properties & Data | MatWorld

NaTmS2

ceramic

· JVASP-1618· NaTmS2

NaTmS2 is an inorganic ceramic compound containing sodium, thulium, and sulfur, representing a rare-earth sulfide ceramic in the layered chalcogenide family. This material is primarily investigated in research and development contexts for its potential in solid-state applications including thermoelectrics, optical devices, and ionic conductors, where the combination of rare-earth elements and sulfide chemistry offers tunable electronic and thermal properties distinct from conventional oxides.

thermoelectric devicessolid-state ionicsoptical windowsresearch materialsrare-earth ceramicsenergy conversion

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	53.01	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)	36.33	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.862	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.382	eV	DFT · OptB88vdW
↳	3.203	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	15.30	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.772	-	DFT · OptB88vdW
↳	4.844	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.6200	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.387	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	0.00300	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00208	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-255	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	309.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.820	%	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)	-2.019	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.

NaTmS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental