NaYSi

ceramic

· JVASP-39496· NaYSi

NaYSi is a rare-earth silicate ceramic compound containing sodium, yttrium, and silicon. This material belongs to the family of rare-earth silicates, which are primarily investigated for high-temperature structural applications and specialized optical or thermal barrier uses. While not widely commercialized as a bulk engineering material, compounds in this family show promise in aerospace thermal protection systems and advanced refractory applications where chemical stability and thermal performance are critical.

thermal barrier coatingshigh-temperature ceramicsrare-earth silicates researchaerospace thermal protectionrefractory applicationsadvanced ceramic composites

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1045	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.2120	eV	DFT · OptB88vdW
↳	0.6590	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	62.79	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	25.92	-	DFT · OptB88vdW
↳	13.83	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.3262	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00169	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00156	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-199.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	244.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	22.08	%	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)	0.6893	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.1176	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.

NaYSi — Properties & Data | MatWorld

NaYSi

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental