Er3TaO7

ceramic

· JVASP-50390· Er3TaO7

Er₃TaO₇ is a rare-earth tantalum oxide ceramic compound combining erbium (a lanthanide element) with tantalum pentoxide. This is an experimental material primarily studied in research contexts for potential high-temperature and electronic applications, belonging to the family of rare-earth complex oxides that show promise in aerospace thermal protection, electrical insulation, and advanced photonic devices.

high-temperature coatingsthermal barrier materialsoptical/photonic researchelectrical insulatorsaerospace applicationsexperimental ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3362	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	3.551	eV	DFT · OptB88vdW
↳	4.675	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.673	-	DFT · OptB88vdW
↳	3.717	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00100	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000454	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-337.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	392.8	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)	0.03020	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.668	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.

Er3TaO7 — Properties & Data | MatWorld

Er3TaO7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental