Germanium telluride (GeTe) is a chemical compound of germanium and tellurium and is a component of chalcogenide glasses. It shows semimetallic conduction and ferroelectric behaviour.
Molar mass：200.21 g/mol
Melting point：725 °C (1,337 °F; 998 K)
Band gap：0.6 eV
Refractive index (nD)：5
Crystal structure：Rhombohedral, hR6
It is a promising thermoelectric compound with uses in doping, alloying, and nanostructuring, non-stoichiometric defects. It is also an important semiconductor that can act as a low temperature superconductor when doped. GeTe is also an important semiconductor material prototypical phase change material of high interest for applications in optical and electronic non-volatile memories.