The Meissner impact shown by levitating a magnet higher than a cuprate superconductor, which happens to be cooled by liquid nitrogen Less than some disorders, for instance particularly lower temperatures, some ceramics exhibit high-temperature superconductivity (in superconductivity, "high temperature" means higher than 30 K). The main reason for this is https://emilianohhgdc.wssblogs.com/39097670/considerations-to-know-about-siliziumnitrid