TmTaO4

ceramic

· TmTaO4

TmTaO4 is a rare-earth tantalate ceramic compound combining thulium oxide with tantalum pentoxide, belonging to the family of complex metal oxides. This material is primarily of research and development interest rather than established industrial production, with potential applications in high-temperature ceramics, optical devices, and advanced refractory systems where its tantalate chemistry provides chemical stability and the rare-earth dopant contributes to specialized electronic or photonic properties.

high-temperature ceramicsoptical/photonic materialsrefractory compoundsrare-earth applicationsresearch materialsadvanced ceramics development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3143	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 entries	3.635	eV	DFT · OptB88vdW
↳	4.820	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	30.75	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.909	-	DFT · OptB88vdW
↳	3.843	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	1.291	C/m²	DFT · PBE
↳	0.3388	C/m²	DFT · OptB88vdW
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00144	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000963	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-253.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	392.3	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.02320	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.426	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.

TmTaO4 — Properties & Data | MatWorld

TmTaO4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental