Ge2Bi2Te5

ceramic

· JVASP-102619· Ge2Bi2Te5

Ge2Bi2Te5 is a quaternary chalcogenide ceramic compound belonging to the telluride family, combining germanium, bismuth, and tellurium in a layered crystal structure. This material is primarily investigated for phase-change memory (PCM) applications and thermoelectric devices, where its ability to rapidly switch between crystalline and amorphous states enables non-volatile data storage, and its moderate thermoelectric properties support solid-state cooling and power generation. While not yet widely commercialized compared to established alternatives like GST (Ge-Sb-Te), this compound represents an active research area for next-generation memory technologies and energy conversion systems where improved thermal stability and switching speed are critical.

phase-change memory devicesnon-volatile data storagethermoelectric applicationssolid-state cooling systemsthermal energy conversionresearch and development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2504	lb/in³	DFT · OptB88vdW

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.6100	eV	DFT · OptB88vdW
↳	0.7900	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	45.39	-	DFT · OptB88vdW
↳	35.76	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	26.17	%	DFT · TBmBJ

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)	0.000400	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1813	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.

Ge2Bi2Te5 — Properties & Data | MatWorld

Ge2Bi2Te5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental