Er3 Co9

semiconductor

· Er3 Co9

Er₃Co₉ is an intermetallic compound in the rare-earth cobalt family, combining erbium (a lanthanide) with cobalt in a defined stoichiometric ratio. This material is primarily of research interest for applications requiring high magnetic moments and thermal stability, as rare-earth cobalt intermetallics are known for strong magnetic coupling and Curie temperatures suitable for elevated-temperature operation. Engineers evaluating Er₃Co₉ should note it occupies a niche position between soft magnetic alloys and permanent magnet materials, making it relevant for applications where conventional ferrites or Nd-Fe-B magnets face thermal or performance limitations.

high-temperature magnetic applicationsrare-earth permanent magnetsmagnetic device researchmaterials testing and characterizationspecialized aerospace/defense systemsintermetallic compound development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.01040	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.2220	eV/atom	—

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

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.

Er3 Co9

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control