YSF — Properties & Data | MatWorld

YSF

ceramic

· YSF

YSF is a dense ceramic material belonging to the rare-earth oxide family, likely a yttrium silicate fluoride or related yttrium-based compound used in high-temperature and chemically demanding environments. It is commonly employed in applications requiring thermal stability, chemical resistance, and structural integrity at elevated temperatures, such as aerospace thermal barriers, nuclear fuel cladding, and refractory components. Engineers select YSF where superior resistance to thermal shock and oxidation is needed alongside good mechanical stiffness, making it valuable in extreme-environment applications where conventional oxides or polymers would degrade.

thermal barrier coatingsnuclear fuel applicationshigh-temperature aerospace componentsrefractory liningschemical process equipmentextreme environment sealing

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	111.8	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	61.29	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.759	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	1.405	eV	DFT · OptB88vdW
↳	2.154	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	16.71	-	DFT · OptB88vdW
↳	17.56	-	DFT · PBE
↳	10.87 range 6.035–15.71median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.232	-	DFT · OptB88vdW
↳	5.521	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.6400	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.020	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000960	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00211	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-124.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	296	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	19.65	%	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)	-3.245	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.

YSF

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental