K3TaO8 — Properties & Data | MatWorld

K3TaO8

ceramic

· K3TaO8

K3TaO8 is a potassium tantalate ceramic compound belonging to the family of complex metal oxides with potential applications in advanced functional ceramics. While not yet established as a standard commercial material, tantalate-based ceramics are actively researched for electrochemical, photocatalytic, and dielectric applications due to tantalum's chemical stability and high refractive index. This composition represents an experimental material of interest to researchers developing next-generation ceramics for energy storage, photocatalysis, and specialized electronic applications where conventional oxides show limitations.

photocatalytic materials (research)electrochemical applicationsdielectric ceramicsion-conductive membranesadvanced ceramics (experimental)high-temperature stable compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	41.32	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	20.35	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.894	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.232	eV	DFT · OptB88vdW
↳	4.597	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	16.90	-	DFT · OptB88vdW
↳	10.95 range 2.742–19.17median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.252	-	DFT · OptB88vdW
↳	2.698	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.1749	C/m²	DFT · OptB88vdW
↳	0.3257	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000932	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000561	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-370.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	393.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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)	0.1133	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.613	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.

K3TaO8

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental