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Patent Pending Iron-based superconductors (FeSC) are iron-containing chemical compounds whose superconducting properties were discovered in 2006.[1][2] In 2008, led by recently discovered iron pnictide compounds (originally known as oxypnictides), they were in the first stages of experimentation and implementation.[3] (Previously most high-temperature superconductors were cuprates and being based on layers of copper and oxygen sandwiched between other substances (La, Ba, Hg)).