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

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1435

Lastpage

1437

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233627

Filename

233627