FeP2 — Properties & Data | MatWorld

FeP2

metal

· FeP2

FeP2 is an iron phosphide intermetallic compound belonging to the transition metal phosphide family, characterized by a defined stoichiometric ratio of iron to phosphorus. While not a mainstream structural material, iron phosphides have attracted research interest as potential catalysts, particularly in hydrogen evolution and oxygen reduction reactions, and as components in hard coating systems and wear-resistant applications. FeP2 may also be explored in thermoelectric and magnetocaloric research contexts, though industrial deployment remains limited compared to conventional iron alloys.

electrocatalysis and fuel cellshydrogen generationwear-resistant coatingsresearch compoundshard materials and abrasivesadvanced materials development

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	180.0	GPa	DFT
↳	174.9	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1600	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	153.7	GPa	DFT
↳	156.2	GPa	DFT · OptB88vdW

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
Density(ρ)	5.042	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.3820	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	37.60	-	DFT · PBE
↳	29.84 range 22.48–37.20median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	23.92	-	DFT · OptB88vdW
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.04667	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.04333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00169	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00126	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-285.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	348	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5489	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

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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.

FeP2

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