| 词条 | Germanium telluride |
| 释义 |
| verifiedrevid = 408046099 | ImageFile = Germanium(II)-tellurid.png | ImageSize = 240px | ImageCaption = Unit cell of germanium telluride. | ImageAlt = Unit cell of rhombohedral germanium telluride under standard conditions. The purple atoms represent the germanium ions. | IUPACName = | OtherNames = |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 74888 | InChI = 1/GeTe2/c2-1-3 | SMILES = [Te]=[Ge]=[Te] | InChIKey = GPMBECJIPQBCKI-UHFFFAOYAU | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/GeTe2/c2-1-3 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = GPMBECJIPQBCKI-UHFFFAOYSA-N | CASNo = 12025-39-7 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 16213264 |Section2={{Chembox Properties | Formula = GeTe | MolarMass = 200.21 g/mol | Appearance = solid | Density = 6.14 g/cm3 | MeltingPtC = 725 | BoilingPtC = | Solubility = | RefractIndex = 5 | BandGap = 0.6 eV [1] |Section3={{Chembox Structure | CrystalStruct = Rhombohedral, hR6 | SpaceGroup = R3m, No. 160 | LattConst_a = 4.1719 Å | LattConst_c = 10.710 Å | UnitCellVolume = 161.430 Å3 | LattConst_ref = [2] }} |Section7={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = |Section8={{Chembox Related | OtherAnions = Germanium monoxide Germanium monosulfide Germanium monoselenide }}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] 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] References1. ^{{cite journal| journal = Phys. Rev.| author = R. Tsu| volume = 172| pages = 779–788 | year =1968| title = Optical and Electrical Properties and Band Structure of GeTe and SnTe| doi = 10.1103/PhysRev.172.779| issue = 3 |bibcode = 1968PhRv..172..779T |display-authors=etal}} {{Germanium compounds}}{{Tellurides}}{{inorganic-compound-stub}}2. ^{{DOI|10.1002/pssb.201248412}} 3. ^{{cite journal| journal = Phase Transitions| volume = 60| page = 67| year = 1997| title = Influence of Se, Pb and Mn impurities on the ferroelectric phase transition in GeTe studied by EXAFS|author1=A. I. Lebedev |author2=I. A. Sluchinskaya |author3=V. N. Demin |author4=I. H. Munro | url = http://semiconductors.phys.msu.su/publ/phtr.html| doi=10.1080/01411599708220051}} 4. ^{{cite book|url=https://books.google.com/books?id=umUyWSUgRYgC&pg=PA12|page=12|title =Growth of Crystals|author1=E. I. Givargizov |author2=A.M. Mel'nikova | publisher =Birkhäuser| year = 2002| isbn = 0-306-18121-5}} 5. ^{{Cite journal | last1 = Pawley | first1 = G. | last2 = Cochran | first2 = W. | last3 = Cowley | first3 = R. | last4 = Dolling | first4 = G. | title = Diatomic Ferroelectrics | doi = 10.1103/PhysRevLett.17.753 | journal = Physical Review Letters | volume = 17 | issue = 14 | pages = 753 | year = 1966 | pmid = | pmc = |bibcode = 1966PhRvL..17..753P }} 6. ^{{Cite journal | last1 = Hein | first1 = R. | last2 = Gibson | first2 = J. | last3 = Mazelsky | first3 = R. | last4 = Miller | first4 = R. | last5 = Hulm | first5 = J. | title = Superconductivity in Germanium Telluride | doi = 10.1103/PhysRevLett.12.320 | journal = Physical Review Letters | volume = 12 | issue = 12 | pages = 320 | year = 1964 | pmid = | pmc = |bibcode = 1964PhRvL..12..320H }} 3 : Germanium compounds|Tellurides|Ferroelectric materials |
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