| 词条 | Uranium diselenide |
| 释义 |
| ImageFile = | ImageSize = 150px | Section1 = {{Chembox Identifiers | CASNo = 12138-21-5 | EINECS=235-245-4 | PubChem = 82939 | ChemSpiderID = 74838 | StdInChI=1S/2Se.U | StdInChIKey = WIQPIQPRLFROPS-UHFFFAOYSA-N | SMILES = [Se-2].[Se-2].[U+4] | Section2 = {{Chembox Properties | Formula = USe2 | MolarMass = 395.948 g/mol | Appearance = black crystalline solid }}Uranium diselenide is a compound of uranium and selenium. It has a β form that has orthorhombic crystal system. The family of crystals it matches is PbCl2. The dimensions of the unit cell are a: 7.455 Å, b: 4.2320 Å, c= 8.964 Å. The compound has the unusual property of ferromagnetism, but only if the temperature is below 14 K.[1] Tellurium can be substituted for selenium in varying quantities, expanding the lattice and increasing the ferromagnetic Curie temperature.[1] References1. ^1 {{cite journal|last=Noël|first=H.|author2=M. Potel |author3=R. Troc |author4=L. Shlyk |date=October 1996|title=Crystal Structure and Physical Properties of β USe2 and USe2−xTex(x= 0.24 and 0.72)|journal=Journal of Solid State Chemistry|volume=126|issue=1|pages=22–26|doi=10.1006/jssc.1996.0304|url=http://www.sciencedirect.com/science/article/pii/S0022459696903047|bibcode = 1996JSSCh.126...22N }} {{Uranium compounds}}{{Selenides}} 3 : Uranium(IV) compounds|Selenides|Dichalcogenides |
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