K3ScSi2O7 — Properties & Data | MatWorld

K3ScSi2O7

ceramic

· JVASP-25667· K3ScSi2O7

K3ScSi2O7 is a rare-earth silicate ceramic compound containing potassium, scandium, and silicon oxide phases. This material belongs to the family of advanced silicate ceramics and appears to be primarily a research compound rather than an established commercial material; it is investigated for high-temperature structural applications where scandium incorporation offers improved thermal and mechanical stability compared to conventional silicates. The potassium-scandium-silicate system represents an emerging material class of interest for specialized refractory, optical, or electronic ceramic applications where rare-earth doping enhances performance.

Advanced ceramics researchHigh-temperature refractory materialsRare-earth oxide systemsOptical ceramics (developmental)Thermal barrier coatings (potential)Specialty structural ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	104.7	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	58.24	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.875	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.547	eV	DFT · OptB88vdW
↳	5.212	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.000	-	DFT · OptB88vdW
↳	2.577	-	DFT · TBmBJ
Thermoelectric Power Factor(PF)2 entries	0.000787	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00100	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-137.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	387.7	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.866	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.

K3ScSi2O7

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental