Coaxing YBCO Above 175K

"Hyper YBCO" HY-134


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3 March 2009
Superconductors.ORG

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Since its discovery in 1987 YBCO has established itself as the
preeminent industrial superconductor. However, it has consistently
resisted efforts to increase its critical transition temperature (Tc)
much beyond about 105K.

Superconductors.ORG announces the discovery of a structure type
that facilitates an improvement in the Tc of YBCO beyond 175K (see above
plot). And, while the volume fraction derived from the method of
synthesis is low, the profound Tc improvement again validates planar
weight disparity (PWD) as a robust Tc-enhancement mechanism.

[To see graphics and read the rest of the story, click the below link.]

http://www.superconductors.org/Hyper134.htm