Ceramic Superconductor Applications

Conductive ceramics conductive ceramics superconductors.

Ceramic superconductor applications.

Superconductivity is the complete disappearance of electric resistance in materials that are cooled to extremely low temperatures. The superconductor we will be experimenting with is an yttrium y barium ba and copper cu composition. Humphreys in concise encyclopedia of advanced ceramic materials 1991. This chapter discusses the theory crystalline structure properties and applications of ceramic superconductors.

Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. The importance of the work of bednorz and müller was that their discovery of superconductivity in ceramics with a perovskite like structure that led directly to superconductivity above liquid nitrogen temperatures. Many ceramic superconductors physically behave as superconductors of the second type. The ceramic materials used to make superconductors are a class of materials called perovskites.

The temperature at which resistance ceases is referred to as the transition temperature or critical temperature tc. Chemical formula is yba2cu3o7. This superconductor has a critical transition temperature around 90k well above liquid nitrogen s 77k. Tc is usually measured in degrees kelvin k 0 k being absolute zero the.