SemiConductors (1 Viewer)

[ausm8]

Hi,
I have a question about superconductors, especially about YBaCuO. Is this substance a conductor at a temperature above critical temp? If yes, why?

Cheers

 

[Riviet]

Well if it fits under the category of a "metal oxide ceramic", then it is likely to superconduct at temperatures a little higher than the critical temperature.

 

[ausm8]

Thanks, but I am asking about it at room temperature.


Thanks

 

[WouldbeDoctor]

Hi,
I have a question about superconductors, especially about YBaCuO. Is this substance a conductor at a temperature above critical temp? If yes, why?

Cheers

According to a table I research it has a critical temp. of 30 K. The answer to your question is no. There is no superconductor found to have a critical temperature at room temp. I can see why rivet didn't reply (no offense) A critical temperature is the temperature inwhich the conductor has 0 resistance. I think more research is in order. However, keep in mind that the topic of superconductivity is complex and its presence in the syllabus of H.S.C physics is questionable. It cannot be explained for type II conductors which is the one you mentioned. BSC theory only explains for type I which are elements. Anyhow, I hope that provided clarification.

WBD

 

[Riviet]

Is this substance a conductor at a temperature above critical temp?

Just to clarify, at temperatures above the critical temperature, all type I or II conductors will still conduct, but with much higher resistance than if it were below the critical temperature.

 

[Jase]

um.. i think ceramic oxides need to be doped in order to conduct. or at least conduct 'well'.