type I and type II superconductors

Type I superconductors are materials that become perfectly conductive and expel all magnetic fields when cooled below a critical temperature, losing their superconducting properties suddenly and completely. They often have simple structures and are usually pure metals. Type II superconductors also conduct perfectly but allow magnetic fields to penetrate in small, quantized areas called vortices, remaining superconducting under higher magnetic fields. They are typically alloys or complex compounds. Essentially, Type I superconductors are straightforward and fragile, while Type II are more robust and adaptable to real-world applications involving stronger magnetic fields.