K2Dy4Cu4Se9

metal

· JVASP-30482· K2Dy4Cu4Se9

K2Dy4Cu4Se9 is a complex quaternary intermetallic compound combining potassium, dysprosium, copper, and selenium—a research-phase material rather than an established engineering material. This compound belongs to the family of rare-earth-based selenides and represents exploratory work in functional materials where the combination of rare earth (dysprosium) and transition metal (copper) elements may enable novel electronic, magnetic, or thermoelectric properties. While not currently used in mainstream industrial applications, materials in this chemical family are investigated for next-generation energy conversion, magnetic devices, and quantum materials research.

thermoelectric devices (research)quantum materials (experimental)rare-earth functional compoundssolid-state physics researchelectronic materials development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.194	kg/m³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)	0.8030	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-165.2	µV/K	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-1.350	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.

K2Dy4Cu4Se9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control