YFeF5 — Properties & Data | MatWorld

YFeF5

metal

· JVASP-8364· YFeF5

YFeF5 is an yttrium-iron fluoride compound that falls within the rare-earth fluoride metal family, representing an emerging functional material primarily of research and development interest rather than established industrial production. This material exhibits properties relevant to magnetic, optical, or electronic applications that exploit the yttrium-iron coupling, with potential use in specialized high-performance contexts where fluoride-based materials offer advantages in thermal stability or chemical inertness. The compound's relative scarcity in commercial deployment suggests it remains under investigation for niche applications or as a precursor to engineered ceramics and composites, rather than as a commodity engineering material.

Rare-earth functional materials (R&D)Magnetic component researchFluoride-based ceramicsHigh-temperature electronic materialsMaterials chemistry explorationPotential optical or photonic applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	64.79	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	38.27	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.385	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.5600	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	7.632	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.648	-	DFT · OptB88vdW
Magnetic Moment(μB)	4.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000570	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000504	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-148.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	146.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.1883	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.170	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

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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.

YFeF5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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