NdFeSi

metal

· JVASP-17796· NdFeSi

NdFeSi is an intermetallic compound combining neodymium, iron, and silicon, representing a transition metal alloy system typically studied for magnetic and structural applications. This material family is primarily investigated in research contexts for permanent magnet applications, magnetic refrigeration, and magnetostrictive devices where the combination of rare-earth and iron-based constituents can provide enhanced magnetic performance. Engineers consider NdFeSi-based alloys when seeking alternatives to conventional NdFeB magnets or when exploring materials for magnetothermoelectric applications, though most commercial implementations favor more established rare-earth-iron systems.

permanent magnetsmagnetic refrigeration systemsmagnetostrictive actuatorsrare-earth alloy researchfunctional materials developmentmagnetic device components

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	12,318.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	7,162	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2392	lb/in³	DFT · OptB88vdW

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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)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000357	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000344	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	8.623	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	8.030	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)	-0.5665	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

Export Control

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.

NdFeSi — Properties & Data | MatWorld

NdFeSi

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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Environmental

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