Er3CuSiS7 — Properties & Data | MatWorld

Er3CuSiS7

metal

· JVASP-24462· Er3CuSiS7

Er₃CuSiS₇ is an ternary/quaternary intermetallic compound combining erbium (a rare-earth element), copper, silicon, and sulfur. This is a research-phase material studied primarily in solid-state chemistry and materials science for its potential thermoelectric, optoelectronic, or semiconducting properties, rather than an established engineering material in widespread production. The rare-earth composition and mixed-anion structure (sulfide-based) make it relevant to emerging technologies in energy conversion and advanced functional materials, though engineering adoption remains limited pending optimization of processing routes and property validation.

thermoelectric devices (research)rare-earth functional materialssolid-state chemistry compoundsoptoelectronic materials (exploratory)high-temperature energy conversion (experimental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2083	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.978	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.063	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.8600	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.480	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00134	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000849	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-211	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	269	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.646	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

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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.

Er3CuSiS7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

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