Ge2Sb2Te5 — Properties & Data | MatWorld

Ge2Sb2Te5

Name: Ge2Sb2Te5
Brand: MatWorld

semiconductor

· Ge2Sb2Te5

Ge2Sb2Te5 is a chalcogenide compound belonging to the phase-change materials (PCM) family, characterized by rapid and reversible transitions between crystalline and amorphous states triggered by thermal or electrical stimuli. This material is the archetypal composition used in rewritable optical media (DVDs, Blu-rays) and is increasingly explored for next-generation non-volatile memory devices, thermal imaging, and neuromorphic computing applications where the ability to switch between distinct physical states is exploited for information storage and processing.

optical data storage mediaphase-change memory (PCM) devicesnon-volatile memory systemsthermal switching applicationsneuromorphic computing researchinfrared sensing and imaging

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	22.66	GPa	DFT
Shear Modulus(G)	13.02	GPa	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.050	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.5000	eV	Measured
↳	0.04100	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	79.62	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00254	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000885	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-145.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-1.787	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.02240	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.09939	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

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.

Ge2Sb2Te5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control