Germanium telluride
Chemical compound / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Germanium telluride?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
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.[3]
Quick Facts Identifiers, Properties ...
Unit cell of germanium telluride. | |
Identifiers | |
---|---|
3D model (JSmol) |
|
ChemSpider |
|
ECHA InfoCard | 100.031.538 |
PubChem CID |
|
| |
| |
Properties | |
GeTe | |
Molar mass | 200.21 g/mol |
Appearance | solid |
Density | 6.14 g/cm3 |
Melting point | 725 °C (1,337 °F; 998 K) |
Band gap | 0.6 eV [1] |
Refractive index (nD) |
5 |
Structure | |
Rhombohedral, hR6 | |
R3m, No. 160 | |
Lattice volume (V) |
161.430 Å3 |
Related compounds | |
Other anions |
Germanium monoxide Germanium monosulfide Germanium monoselenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Close
Germanium telluride exists in three major crystalline forms, room-temperature α (rhombohedral) and γ (orthorhombic) structures and high-temperature β (cubic, rocksalt-type) phase; α phase being most phase for pure GeTe below the ferroelectric Curie temperature of approximately 670 K.[4][5]
Doped germanium telluride is a low temperature superconductor.[6]