Custom Search

Wednesday, October 9, 2013

Superconductivity in carbon nanostructures.

Fullerene and carbon nanotubes are the most common nanostructures. There exist many methods for the synthesis of these materials. Both possess superlative properties and are good candidates for various potential applications. Conductivity property of these materials depends upon the chirality and length of the specimen material. Superconductivity phenomena were observed in many compounds of fullerene. Superconductivity is a phenomenon where the material loses its resistivity absolutely. In 1991, in Bell laboratories, a team lead by Hebard, synthesized C-60 crystals with potassium which exhibited superconductivity phenomena at 18 K. Later superconducting transition temperature of 33K was achieved in Cs2RbC60.  In these materials, superconducting transition temperature can be increased by increasing the radius of dopant alkali atoms. The process of introducing alkali atoms into Carbon-60 is known as intercalation.

No comments:

Post a Comment

Custom Search