YbFeB4 — Properties & Data | MatWorld

YbFeB4

metal

· JVASP-38793· YbFeB4

YbFeB4 is an intermetallic compound in the rare-earth iron boride family, combining ytterbium, iron, and boron elements. This material is primarily of research and developmental interest rather than established industrial production, with potential applications in permanent magnet systems and high-temperature structural components where rare-earth strengthening is beneficial. The ytterbium-iron-boron system is explored for its potential to offer alternative rare-earth magnetic performance or improved thermal stability compared to conventional RE-Fe-B magnets, though commercialization and large-scale engineering use remain limited.

rare-earth magnets (research)high-temperature intermetallicspermanent magnet materialsmaterials research and developmentboron-containing structural alloys

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	8.105	kg/m³	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	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	2.155	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000493	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000465	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	11.67	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	11.94	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5134	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.

YbFeB4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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