Uranium diselenide
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]
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.032.029  |
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CompTox Dashboard (EPA) |
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| Properties | |
| USe2 | |
| Molar mass | 395.948 g/mol |
| Appearance | black crystalline solid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Tellurium can be substituted for selenium in varying quantities, expanding the lattice and increasing the ferromagnetic Curie temperature.[1]
References
- Noël, H.; M. Potel; R. Troc; L. Shlyk (October 1996). "Crystal Structure and Physical Properties of β USe2 and USe2−xTex(x= 0.24 and 0.72)". Journal of Solid State Chemistry. 126 (1): 22–26. Bibcode:1996JSSCh.126...22N. doi:10.1006/jssc.1996.0304.
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