Germanium telluride
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.031.538 |
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PubChem CID
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| 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 |
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Refractive index (nD)
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5 |
| Structure | |
| Rhombohedral, hR6 | |
| R3m, No. 160 | |
| Related compounds | |
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Other anions
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Germanium monoxide Germanium monosulfide Germanium monoselenide |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is   ?) |
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| Infobox references | |
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.
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.
Doped germanium telluride is a low temperature superconductor.
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