The Meissner impact 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 exhibit high-temperature superconductivity (in superconductivity, "high temperature" means earlier mentioned thirty K). The explanation for this is not understood, but there https://magneticbead48158.blogmazing.com/38085876/the-5-second-trick-for-ceramics-material