Yttrium barium copper oxide (YBa2Cu3O7) - Powder

Characteristics:

Yttrium barium copper oxide (YBCO) is a family of crystalline chemical compounds, famous for displaying high-temperature superconductivity. It includes the first material ever discovered to become superconducting above the boiling point of liquid nitrogen (77 K) at about 92 K. Many YBCO compounds have the general formula YBa₂Cu₃O_7−x (also known as Y123), although materials with other Y:Ba:Cu ratios exist, such as YBa₂Cu₄O_y (Y124) or Y₂Ba₄Cu₇O_y (Y247).

Uses:

Thanks to this and other publications at the time, YBCO has become a popular high-temperature superconductor for use by hobbyists and in education, as the magnetic levitation effect can be easily demonstrated using liquid nitrogen as coolant.