Single-crystal films of high-temperature superconductors with the perovskite structure
Golovashkin A. I. , Ekimov E. V., Krasnosvobodtsev S. I. , Pechen' E. V.
Single-crystal films of the superconductors MBa2Cu307 (M = Y,Eu,Ho) with Tc = 90.5-91 К have been synthesized. The width of the resistive transition is 0.5-1 K. A sharp and complete diamagnetic transition is observed near 90 K. The resistivity at 100 К is 40-100//fi · cm. The critical current in liquid nitrogen is greater than 106 A/cm2.