Iron-based superconductor
![Crystal structure of LnFeAsOF, a 1111-type ferropnictide compound. Ln = lanthanide (La, Ce, etc.), Pn = pnictide (As, P, etc.)[1]](/uploads/202501/13/LnFePnOFstructure0452.png)
![Phase diagram of the 122 family of ferro-pnictides complemented by the 122(Se) family as a generalized phase diagram for the iron based superconductors[1]](/uploads/202501/13/Phase_diagram_of_the_122_family_of_ferro-pnictides0452.png)
Iron-based superconductors (FeSC) are iron-containing chemical compounds whose superconducting properties were discovered in 2006. In 2008, led by recently discovered iron pnictide compounds (originally known as oxypnictides), they were in the first stages of experimentation and implementation. (Previously most high-temperature superconductors were cuprates and being based on layers of copper and oxygen sandwiched between other substances (La, Ba, Hg)).