Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625571 | Journal of Alloys and Compounds | 2007 | 4 Pages |
Abstract
Superconducting (Tl0.5Pb0.5)(Sr0.85Ba0.15)2Ca2Cu3Oz films were prepared on highly polished, untextured silver substrates. A superconducting transition temperature (Tc) of 114.9 ± 0.1 K was obtained from the resistivity versus temperature measurements for different applied ac currents. The temperature dependence of the critical current was fitted with a power law: Jc(T) = Jc(0)[1 â T/Tc]n with n = 2. The critical current in self-field at 77 K was found to be 8 Ã 103 A/cm2. The temperature dependence of the real and imaginary parts of ac susceptibility was measured for different amplitudes of ac magnetic field. Only a small differences of the ac susceptibility for parallel and perpendicular fields with respect to the film surface were observed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
W.M. Woch, R. Zalecki, A. KoÅodziejczyk, C. Deinhofer, G. Gritzner,