LiTaO3

Name: LiTaO3
Brand: MatWorld

semiconductor

· LiTaO3

Lithium tantalate (LiTaO₃) is a ferroelectric ceramic compound with strong piezoelectric and electro-optic properties, widely used in precision electronic and photonic applications. It is the preferred material for surface acoustic wave (SAW) devices, integrated optics modulators, and frequency control components in telecommunications and signal processing. Engineers select LiTaO₃ over alternatives like lithium niobate when high-frequency stability, low insertion loss, and compact device footprints are critical—particularly in RF filters, delay lines, and high-speed optical communication systems.

SAW filters and resonatorsElectro-optic modulatorsRF/microwave signal processingTelecommunications componentsFrequency control devicesIntegrated photonics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	19,459.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)	13,120.1	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2452	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)4 entries	4.100	eV	Measured
↳	3.544	eV	DFT · PBE
↳	4.700	eV	DFT · GLLB-SC
↳	3.767	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	40.56	-	DFT · OptB88vdW
↳	22.90 range 5.029–40.77median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.291	-	DFT · OptB88vdW
Magnetic Moment(μB)3 entries	0.000	μB	DFT
↳	0.000108	μB	DFT
↳	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.4933	C/m²	DFT · OptB88vdW
↳	2.947	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00345	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00125	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-404.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	451.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	8.800	%	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.1045	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)4 entries	-2.950	eV/atom	DFT
↳	-0.3200	eV/atom	DFT
↳	-2.822	eV/atom	DFT · OptB88vdW
↳	-2.942	eV/atom	Measured

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.

LiTaO3 — Properties & Data | MatWorld

LiTaO3

Mechanical Properties

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