GeSb2Te4
ceramic· JVASP-102749· GeSb2Te4
GeSb2Te4 is a chalcogenide compound belonging to the GST (Germanium-Antimony-Tellurium) family, widely recognized as a phase-change material (PCM) that reversibly transitions between amorphous and crystalline states. This material is the active component in rewritable optical media (DVDs, Blu-rays) and emerging non-volatile memory technologies, where rapid, reversible crystallization enables reliable data storage with excellent cyclability and thermal stability compared to conventional alternatives.
phase-change memory (PCM)optical data storage mediarewritable DVDs and Blu-raysnon-volatile memory devicesthermal energy harvestingprogrammable metamaterials
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 6.118 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.3450 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000500 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.1245 | eV/atom | — |
Verified Unverified Low confidence (<80%) Link to source
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.