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Niobium diselenide or niobium(IV) selenide is a layered transition metal dichalcogenide with formula NbSe2. Niobium diselenide is a lubricant, and a superconductor at temperatures below 7.2 K that exhibit a charge density wave (CDW). NbSe2 crystallizes in several related forms, and can be mechanically exfoliated into monatomic layers, similar to other transition metal dichalcogenide monolayers. Monolayer NbSe2 exhibits very different properties from the bulk material, such as of Ising superconductivity, quantum metallic state, and strong enhancement of the CDW.
1) Nb= 37.04, Se= 62.96
2) Typical purity= 99.8% min., 99.99% min.
1) Niobium diselenide (NbSe2) is sometimes used as a lubricant at high temperatures. It does not break down at temperatures up to about 1300°C
2) Superconductivity
3) Niobium diselenide nanotubes
1) "Toxic by inhalation and if swallowed. Danger of cumulative effects."
2) "Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment."
3) "When using do not eat, drink or smoke. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).''
4) "This material and/or its container must be disposed of as hazardous waste. Refer to a material safety data sheet".