Tm3TaO7 — Properties & Data | MatWorld

Tm3TaO7

ceramic

· JVASP-44105· Tm3TaO7

Tm₃TaO₇ is a rare-earth tantalate ceramic compound combining thulium oxide with tantalum pentoxide in a pyrochlore or defect-fluorite structure. This material is primarily studied in research contexts for high-temperature applications and advanced ceramics, where its combination of rare-earth and refractory metal constituents offers potential for thermal barrier coatings, solid-state electrolytes, or specialized optical components. Its selection depends on balancing the thermal stability and chemical inertness of tantalates with the luminescent or magnetic properties that rare-earth dopants can introduce.

thermal barrier coatingshigh-temperature ceramicssolid-state electrolytesresearch/development compoundsrefractory applicationsoptical/photonic materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3427	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.443	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	22.47	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	2.433	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.257	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.06711	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00108	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000987	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-313.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	300.9	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)	0.02850	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.679	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.

Tm3TaO7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental