Yttrium barium copper oxide, often abbreviated YBCO, is a crystalline chemical compound with the formula YBa2Cu3O7-x. This material, a famous "high-temperature superconductor", achieved prominence because it was the first material to achieve superconductivity above the boiling point (77 K) of liquid nitrogen.
Read more about Yttrium Barium Copper Oxide: History, Synthesis, Structure, Superconductive Properties, Applications in Technology, Surface Modification of YBCO
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—Coventry Kersey Dighton Patmore (1823–1896)