Title :
Transport and microwave properties of YBa/sub 2/Cu/sub 3/O/sub x/ thin films in low magnetic fields
Author :
Mahel, M. ; Benacka, S. ; Adam, R. ; Darula, M. ; Chromik, S.
Author_Institution :
Dept. of Solid State Phys., Comenius Univ., Bratislava, Czechoslovakia
fDate :
3/1/1993 12:00:00 AM
Abstract :
Measurements of the transport critical current and the modulated microwave absorption in low magnetic fields up to 15 mT are presented for c-axis-oriented YBa/sub 2/Cu/sub 3/O/sub x/ thin films at 4.2 K and 77 K. Both the transport critical current and the microwave losses are believed to be determined by the weak links. The intergranular critical state and the influence of the intragranular magnetization are introduced in order to account for the magnetic hysteresis effects. The experimental results agree with those obtained are fitted by a theoretical model.<>
Keywords :
barium compounds; critical currents; electromagnetic wave absorption; high-temperature superconductors; magnetic hysteresis; magnetisation; superconducting thin films; yttrium compounds; 15 mT; 4.2 K; 77 K; YBa/sub 2/Cu/sub 3/O/sub x/; c-axis-oriented; high temperature superconductor; intergranular critical state; intragranular magnetization; low magnetic fields; magnetic hysteresis effects; microwave properties; modulated microwave absorption; thin films; transport critical current; transport properties; weak links; Critical current; Current measurement; Electromagnetic wave absorption; Loss measurement; Magnetic field measurement; Magnetic films; Magnetic hysteresis; Magnetic modulators; Magnetization; Microwave measurements;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
