CsTaN2 — Properties & Data | MatWorld

CsTaN2

ceramic

· CsTaN2

Cesium tantalum nitride (CsTaN₂) is a ternary ceramic compound combining a rare-earth alkali metal (cesium) with a refractory transition metal (tantalum) and nitrogen. This is a specialized research material, not widely deployed in production, but belongs to the family of advanced nitride ceramics being explored for high-temperature structural and electronic applications where extreme thermal stability and chemical inertness are required.

High-temperature structural ceramicsRefractory coatingsSemiconductor researchAdvanced ceramics R&DExtreme environment materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2400	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)	2.256	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)3 entries	15.48	-	DFT · OptB88vdW
↳	16.94	-	DFT · PBE
↳	11.28 range 6.302–16.25median of 2 measurements	-	DFT · PBEsol
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.6133	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.013	me	DFT · OptB88vdW · 27°C
Piezoelectric Modulus(eij)2 entries	0.5333	C/m²	DFT · OptB88vdW
↳	0.09139	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00125	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00262	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-206.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	312.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	-1.105	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.

CsTaN2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental