Bismuth strontium calcium copper oxide

BSCCO (also BiSCCO ) is an acronym for bismuth strontium calcium copper oxide (English - Copper oxides). It is about several high-temperature superconductors, since it is the homologous series Bi2Sr2CanCun O2n 1 6, whose members differ mainly in the number of CuO planes in the unit cell.

Properties

BSCCO is a ceramic-like material, but with metallic properties, which has created the work on superconductivity world new boost since it is superconducting at temperatures above the boiling point of liquid nitrogen (77 K). Liquid nitrogen is about 10-20 times cheaper than liquid helium, requires less effort on the isolation devices and is available worldwide.

Application

Technically interesting Bi2212 ( Bi2Sr2CaCu2O8 ) with a transition temperature of 92 K and Bi2223 ( Bi2Sr2Ca2Cu3O10 ) 110 K. The band leader of the first generation are produced by the PIT method (Powder In Tube) from them. This BSCCO powder is filled in silver pipe, and then rolled into thin ribbons with many filaments. Due to the high cost of materials ( silver) and because the current carrying capacities are insufficient in the magnetic field of a few Tesla, research is being conducted at the strip conductors of the second generation of YBCO world at the time.