Ceramic Superconductors Uses

Hewat in encyclopedia of materials.

Ceramic superconductors uses.

Melt texturing of ybco was the first method used to attempt texturing in any ceramic superconductor. Conductive ceramics conductive ceramics superconductors. The discovery of high temperature above the temperature of liquid nitrogen ceramic superconductors has changed superconductivity from an interesting curiosity to a useable technology with particular applications in the medical field as a superconducting magnet in mri scanners. Superconductivity is the complete disappearance of electric resistance in materials that are cooled to extremely low temperatures.

Tc is usually measured in degrees kelvin k 0 k being absolute zero the. In 1988 jin and co workers at at t bell laboratories reported that melt textured yba 2 cu 3 o 7 x had a j c of 17 10 7 am 2 in a field of 0t at 77 k measured over a short length. Ceramic superconductors are generally heavy metal oxides and neutron diffraction has long been superior for the precise location of light atoms such as hydrogen and oxygen in the presence of heavy atoms. 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. The advantage of neutron diffraction for locating oxygen is obvious from fig. The temperature at which resistance ceases is referred to as the transition temperature or critical temperature tc. The ceramic materials used to make superconductors are a class of materials called perovskites.

Superconductors are also used in nmr and mass spectrometers and. Science and technology 2002. Chemical formula is yba2cu3o7.