The superconductor in question here is a mix of yttrium, barium, and copper oxide that goes by the merciful acronym YBCO. The easy way to make YBCO involves multiple rounds of pulverizing yttrium ...

Maurice Lacroix uses a special blend of ceramic, too, which fuses in hafnium oxide, yttrium oxide and aluminium oxide to boost the durability, thermal stability and strength of the material.