Where can I get a cheap ceramic (hi temp.) superconductor?

[Creator]

I used to have one for demonstration...need to find a current source ...maybe a small 1 inch diameter disk...or preferably a ring. Any sources? Thx.

 

[e.bar.goum]

I used to have one for demonstration...need to find a current source ...maybe a small 1 inch diameter disk...or preferably a ring. Any sources? Thx.

Have you tried googling "YBCO demonstration kit"? Here are a couple of the first hits: http://www.superconductors.org/play.htm and http://www.can-superconductors.com/demonstration-kits.html

If you have access to the correct equipment and a little expertise (it's an exercise for senior undergraduates) YBCO is also fairly easy to make. However, if you only need one bit, those kits above sound good.

 

[CrackerMcGinger]

I would like this also so i can test my shield blueprint.

 

[Herman Trivilino]

The kits are easy enough to find from any scientific supply house, like Arbor Scientific or the like. But I think the OP doesn't want to pay for the entire kit. I'm in the same boat. I have several kits, but the ceramic superconducting material degrades after a few uses and needs to be replaced. Drying it off after each use extends the life. If anyone knows of a source for just the superconducting ceramic discs please post. Thanks.