HfGeTe4 — Properties & Data | MatWorld

HfGeTe4

ceramic

· JVASP-12134· HfGeTe4

HfGeTe4 is a ternary ceramic compound combining hafnium, germanium, and tellurium elements, representing an emerging material in the chalcogenide family. This material is primarily of research interest for thermoelectric and semiconductor applications, where the combination of elements offers potential for tunable electronic and thermal properties. While not yet established in high-volume industrial production, hafnium-based chalcogenides are being investigated for solid-state energy conversion, thermal management systems, and next-generation optoelectronic devices due to their ability to modulate phonon transport and electronic structure.

thermoelectric devicesthermal energy conversionsemiconductor researchinfrared opticssolid-state electronicsexploratory materials development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.975	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.3820	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	18.14	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.1533	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.1867	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00193	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00139	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-199.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	185.8	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)	0.000900	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4597	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.

HfGeTe4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental