High temperature superconductor (ceramic superconductors) are among the currently strongest permanent magnets and have relatively "high" transition temperatures. The material yttrium-barium-copper-oxide (YBaCuO) allows for applications particularly high remanence (=trapped magnetic field).
In comparison to metallic superconductors are ceramic materials at minus temperatures superconducting (under -140 °C, 133 K). A superconducting at room temperature (20 ° C, 293 K) at present seems impossible.
Together with our partners we have formed research groups to analyze new information and to drive innovative developments on this very interesting topic ahead.