Fe8O9 — Properties & Data | MatWorld

Fe8O9

ceramic

· JVASP-48315· Fe8O9

Fe8O9 is an iron oxide ceramic compound that exists as an intermediate phase in the iron oxide system, positioned between magnetite (Fe3O4) and hematite (Fe2O3). While not widely commercialized as a primary engineering material, Fe8O9 is of significant interest in materials research and industrial processes involving iron oxidation, oxygen storage, and thermal processing of iron-bearing materials. Its notable characteristics—including mixed valence iron states and moderate density—make it relevant to high-temperature applications, catalysis, and oxygen-transport systems where intermediate iron oxide phases offer advantages over pure binary oxides.

iron ore processingoxygen storage materialshigh-temperature catalyststhermal cycling applicationsmaterials researchindustrial oxidation control

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2050	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000165	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000188	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	6.740	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	7.390	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)	0.1651	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.114	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.

Fe8O9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental