Ceramic Oxide Superconductor

A ceramic oxide superconductive composite material comprising a ceramic superconductor and a non super conductive material comprising at least one element which does not react with any of the elements of the ceramic oxide superconductor has improved superconductive properties such as a higher critical temperature and a larger critical cur rent density.

Ceramic oxide superconductor.

Ceramic materials are typically oxides nitrides or carbides with ionic or covalent bonding which are also characterized by being brittle. Using our advanced combustion spray pyrolysis ceramic powder manufacturing process we are able to achieve the super complex crystal structures needed to create optimal superconductor materials. Better superconductors from ceramic copper oxides. The first of these was.

Most high tc ceramics are layered structures with two dimensional copper oxygen sheets along which superconduction takes place. Better superconductors from ceramic copper oxides. Ceramic synthesis does not often receive widespread publicity but since oxide superconductors were discovered bednorz and müller 1986 its profile has been raised not only within scientific circles but also among the general public. Still superconductors are so efficient compared to everyday materials like copper that the cost of cooling them down with special cryogenic circuits is negligible compared to the energy saved from being converted and ultimately wasted in the form of heat.

Thermal analysis and thermally induced measurements. Most ceramics do not become superconductors at low temperature but there are several families of superc. By denis paiste massachusetts institute of technology. Our standard superconductor products offer 99 9 purity while our ultra high purity products can deliver up to 99 99 raw material purity.

Powder mixing is used widely for advanced ceramic manufacture particularly for electroceramics such as barium titanates and has also attracted considerable attention for the synthesis of high temperature oxide superconductors. The best ceramic conductors are the so called high tc superconductors materials that lose their resistance at much higher critical temperatures than their metal alloy counterparts. Oxygen is at the core of these structures and plays a key role in the superconductivity. The new ceramic oxide superconductors are type ii superconductors and early research indicated upper critical fields that appear to be at least as high as anything yet discovered.

One paper 6 stated that the upper critical field of yttrium barium copper oxide is 14 tesla at liquid nitrogen temperature 77 degrees kelvin and at least 60 tesla at liquid helium temperature. Large 17 o shifts are found between the different oxygen containing sites providing good resolution even from static spectra.