MICROWAVE VORTEX DISSIPATION OF SUPERCONDUCTING ND-CE-CU-O EPITAXIAL-FILMS IN HIGH MAGNETIC-FIELDS

Authors
YEH NC KRIPLANI U JIANG W REED DS STRAYER DM BARNER JB HUNT BD FOOTE MC VASQUEZ RP GUPTA A KUSSMAUL A
Citation
Nc. Yeh et al., MICROWAVE VORTEX DISSIPATION OF SUPERCONDUCTING ND-CE-CU-O EPITAXIAL-FILMS IN HIGH MAGNETIC-FIELDS, Physical review. B, Condensed matter, 48(13), 1993, pp. 9861-9864
Citations number
31
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
48
Issue
13
Year of publication
1993
Pages
9861 - 9864
Database
ISI
SICI code
0163-1829(1993)48:13<9861:MVDOSN>2.0.ZU;2-#
Abstract
The microwave vortex dissipation of superconducting Nd1.85Ce0.15CuOx e pitaxial films is investigated by use of a sapphire dielectric-ring re sonator in the whispering gallery modes, and in dc magnetic fields ran ging from 0 to 25 kG. By extending the Coffey-Clem model to the thin-f ilm and finite-grain-size limit, we infer important material parameter s, including the irreversibility line, vortex pinning potential, pinni ng force constant and viscosity, through a direct least-squares fit to the microwave-absorption data.