The Meissner effect shown by levitating a magnet earlier mentioned a cuprate superconductor, and that is cooled by liquid nitrogen Underneath some problems, including very low temperatures, some ceramics show high-temperature superconductivity (in superconductivity, "high temperature" signifies over thirty K). The rationale for this isn't recognized, but There are 2 https://josuemnnli.wikimeglio.com/10352757/what_are_the_properties_of_ceramics_things_to_know_before_you_buy