2H-NbSe2 Crystal 99.995% ~8mm Black Gray Box ATOMFAIR®

What is the typical charge density wave transition temperature for 2H-NbSe2 crystals of 99.995% purity?

The product description does not specify the charge density wave transition temperature. However, 2H-NbSe2 is a well-known layered transition metal dichalcogenide that exhibits a charge density wave transition near 33 K and superconductivity below approximately 7.2 K. For this specific 99.995% purity, ~8 mm crystal, the exact transition temperatures should be verified with the manufacturer, as purity and crystal quality can influence these values.

Can this 2H-NbSe2 crystal be used directly in exfoliation for monolayer or few-layer device fabrication?

Yes, as a layered crystal material, 2H-NbSe2 is suitable for mechanical exfoliation to produce monolayer or few-layer flakes for device fabrication. The supplied ~8 mm crystal size provides a sufficiently large area for standard exfoliation techniques using adhesive tape. The 99.995% purity ensures minimal contamination, which is critical for maintaining the intrinsic electronic properties in thin-film devices.

What storage and handling conditions are recommended for 2H-NbSe2 crystals to prevent oxidation or degradation?

The product description does not explicitly state storage conditions. However, 2H-NbSe2 is air-sensitive and can oxidize over time, especially in humid environments. It is recommended to store the crystal in an inert atmosphere (e.g., argon or nitrogen glovebox) and handle it with clean tools to avoid surface contamination. The supplied box packaging should be kept sealed and desiccated until use.