Ceramic Superconductor Applications

This chapter discusses the theory crystalline structure properties and applications of ceramic superconductors.

Ceramic superconductor applications.

The ceramic materials used to make superconductors are a class of materials called perovskites. The first high temperature superconductor was discovered in 1986 by ibm researchers bednorz and müller 3 6 who were awarded the nobel prize in physics in 1987 for their important break through in the discovery of superconductivity in ceramic materials. 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. Humphreys in concise encyclopedia of advanced ceramic materials 1991.

Tc is usually measured in degrees kelvin k 0 k being absolute zero the. Superconductivity is the complete disappearance of electric resistance in materials that are cooled to extremely low temperatures. This superconductor has a critical transition temperature around 90k well above liquid nitrogen s 77k. Conductive ceramics conductive ceramics superconductors.

The superconductor we will be experimenting with is an yttrium y barium ba and copper cu composition. 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. Chemical formula is yba2cu3o7. The temperature at which resistance ceases is referred to as the transition temperature or critical temperature tc.