Title :
Destruction of superconductivity in YBa2Cu3O/sub 7-x/ ceramics by ultrahigh magnetic field
Author :
Tatsenko, O.M. ; Platonov, V.V.
Author_Institution :
RFNC-VNIIEF, Nizhny Novgorod, Russia
Abstract :
Upper critical fields of high-T/sub c/ superconducting YBa/sub 2/Cu/sub 3/O/sub 7/ ceramics were measured in a pulsed magnetic field H/spl ap/300 T generated by magneto-cumulative plant. The presence of a superconducting phase in the cylindrical sample was detected by the appearance of S-like peculiarities on the dM/dt curve at the moment of short-time slowing of the increasing of applied magnetic field. Upper critical fields H/sub C2/ at T=4.2 and 77 K, defined in such a way, are equal to 180/spl plusmn/36 T and 48/spl plusmn/10 T accordingly.
Keywords :
barium compounds; ceramics; copper compounds; high-temperature superconductors; superconducting critical field; yttrium compounds; 144 to 216 T; 300 T; 38 to 58 T; 4.2 K; 77 K; S-like peculiarities; YBa/sub 2/Cu/sub 3/O/sub 7/; dM/dt curve; high-T/sub c/ superconducting YBa/sub 2/Cu/sub 3/O/sub 7/ ceramics; magneto-cumulative plant; pulsed magnetic field; short-time slowing; upper critical fields; Ceramics; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic shielding; Numerical models; Pulse measurements; Satellites; Superconducting magnets; Superconductivity;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.823743
