HoPaO4

ceramic

· JVASP-105480· HoPaO4

Holmium orthophosphate (HoPaO₄) is a rare-earth phosphate ceramic compound belonging to the family of lanthanide phosphates, which are typically investigated for their thermal stability, radiation resistance, and potential as host materials in advanced ceramics. This material exists primarily in research and development contexts rather than widespread industrial production, with interest driven by applications requiring thermal barriers, photonic materials, or environments where rare-earth ion incorporation is beneficial for functional properties.

thermal barrier coatings (research)rare-earth phosphate ceramicsnuclear fuel immobilizationphotonic materials developmenthigh-temperature structural applicationsactinide waste form host materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3566	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.830	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-4.024	eV/atom	—

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

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.

HoPaO4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental