ScTaO4 — Properties & Data | MatWorld

ScTaO4

ceramic

· ScTaO4

ScTaO4 is a scandium tantalate ceramic compound belonging to the family of rare-earth transition-metal oxides. This material is primarily investigated in research and advanced technology contexts for applications requiring high-temperature stability, chemical inertness, and specific electrical or optical properties inherent to tantalate ceramics. ScTaO4 represents an emerging compound of interest in materials science rather than an established commercial material, with potential relevance to specialized high-performance ceramic applications where scandium-doping of tantalate systems offers property advantages over conventional alternatives.

high-temperature ceramicsadvanced research materialsrefractory applicationsoptical/photonic systemsstructural ceramics

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	25,693.9	ksi	DFT
↳	26,591.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	10,455.8	ksi	DFT
↳	11,439.1	ksi	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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2444	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	4.069	eV	DFT · OptB88vdW
↳	5.065	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	14.34 range 5.055–23.63median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.290	-	DFT · OptB88vdW
↳	4.228	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000950	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000917	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-431	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	444.6	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.432	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.

ScTaO4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental