Source: cirosantilli/yttrium-barium-copper-oxide
= Yttrium barium copper oxide
{tag=Barium compound}
{tag=Copper compound}
{wiki}
= YBCO
{c}
{synonym}
{title2}
Upside: superconducting above 92K, which is above the 77K of <liquid nitrogen>, and therefore much much cheaper to obtain and maintain than liquid helium.
Downside: it is brittle, so how do you make wires out of it? Still, can already be used in certain circuits, e.g. high temperature <SQUID devices>.