Ceramic Superconductor Applications

Chemical formula is yba2cu3o7.

Ceramic superconductor applications.

The temperature at which resistance ceases is referred to as the transition temperature or critical temperature tc. Conductive ceramics conductive ceramics superconductors. This chapter discusses the theory crystalline structure properties and applications of ceramic superconductors. 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.

The ceramic materials used to make superconductors are a class of materials called perovskites. Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Humphreys in concise encyclopedia of advanced ceramic materials 1991. Any material exhibiting these properties is a superconductor unlike an ordinary metallic conductor whose resistance decreases gradually as its temperature is lowered even down to near absolute zero a superconductor has a.

The superconductor we will be experimenting with is an yttrium y barium ba and copper cu composition. Tc is usually measured in degrees kelvin k 0 k being absolute zero the. This superconductor has a critical transition temperature around 90k well above liquid nitrogen s 77k. Many ceramic superconductors physically behave as superconductors of the second type.