TaCu3Se4 — Properties & Data | MatWorld

TaCu3Se4

metal

· TaCu3Se4

TaCu₃Se₄ is an intermetallic compound combining tantalum, copper, and selenium, belonging to the family of ternary metal chalcogenides. This is a research-phase material studied primarily for its electronic and structural properties rather than an established industrial compound. The material family is of interest in semiconductor research, thermoelectric device development, and solid-state chemistry, where the combination of a refractory metal (tantalum) with copper and a chalcogen (selenium) creates potential for novel electronic behavior, though practical engineering applications remain limited to specialized research contexts.

thermoelectric researchsemiconductor developmentmetal chalcogenide compoundssolid-state electronicsexperimental materials sciencematerials database reference

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	4,565	ksi	DFT
Shear Modulus(G)	3,146.3	ksi	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2238	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)	1.587	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)3 entries	7.404	-	DFT · OptB88vdW
↳	7.320	-	DFT · PBE
↳	7.715 range 7.598–7.831median 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)	1.160	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.8900	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.06943	C/m²	DFT · OptB88vdW
↳	0.03648	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00219	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00217	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-307.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	278.2	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)	-0.4929	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.

TaCu3Se4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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