Verfahren zur Herstellung hochtemperatursupraleitender massiver Materialien

A starting powder of the formula ```SE u M v Cu W O X , where SE = Y, Nd, Sm, La, Dy, Er or Gd, or a mixture of two or more of these elements M = Ba, Sr or Ca, or a mixture of two or more of these elements u = 0.8 to 2 v = 1 to 2 w = 3 to 4 and x = 1.5 u + v + (0.5...1.5)w, is mixed with a specific platinum-containing compound of the formula ```SE K Pt 1 M m Cu n O x , where k = 0 to 2 l = 1 to 2 m = 2 to 4 n = 1 to 2 and x = 1.5 k + m + (n + 1)z, where (z = 0.5...2), in a mole fraction of 0.2 to 7 mol % and solid materials in the form of, for example, blocks, moulded bodies, strips are produced from this mixture by comminution and compression, as well as heat treatment, which may include a melt-texturing process without a crucible. These solid materials may be used as superconductors in power, drive and transport engineering. The specific platinum-containing compound is claimed.