KTaO3 — Properties & Data | MatWorld

KTaO3

Name: KTaO3
Brand: MatWorld

semiconductor

· KTaO3

KTaO₃ (potassium tantalate) is a perovskite ceramic semiconductor with a cubic crystal structure, belonging to the family of complex oxides used in advanced electronic and photonic devices. It is primarily investigated for applications requiring high permittivity, ferroelectric properties, and photocatalytic activity, making it valuable in research contexts for next-generation sensors, nonlinear optics, and environmental remediation rather than mature high-volume production. Engineers consider KTaO₃ when conventional ferroelectrics (like PZT or BaTiO₃) cannot meet performance requirements in extreme temperature environments or when tunable dielectric properties are needed for RF/microwave components.

ferroelectric devices and capacitorsphotocatalytic water splittingnonlinear optical modulatorshigh-frequency dielectric resonatorscryogenic sensor applicationsquantum material research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	198.2	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	132.4	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.854	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	2.228 – 4.400	eV	5 entriesClick to expand
Dielectric Constant (Relative Permittivity)(εr)3 entries	385.9	-	DFT · OptB88vdW
↳	8.810	-	DFT · PBE
↳	322.6 range 5.376–639.9median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.478	-	DFT · OptB88vdW
↳	4.443	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.6100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.530	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)3 entries	0.000	μB	DFT
↳	-0.000114	μB	DFT
↳	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00438	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00245	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-279.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	418.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.140	%	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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	-2.920	eV/atom	DFT
↳	-0.6400	eV/atom	DFT
↳	-2.918	eV/atom	DFT · OptB88vdW

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

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

Export Control

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.

KTaO3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control