Science, Superconductivity, Ferromagnetic Materials.
EuFe₂(As0.79P0.21)₂. Once cooled to 24 kelvins, or −249.15 degrees Celsius, this material exhibits zero electrical resistance, becoming a superconductor. If cooled further, below 18 K, it acquires ferromagnetic properties. In particular, it undergoes spontaneous magnetization at zero applied