Characterization of YBa2Cu3O7-delta films with different Cu contents grownby metal organic chemical vapor deposition

Authors
Ishizawa, K Yoshida, Y Hasegawa, M Iwata, M Yamagiwa, K Hirabayashi, I Takai, Y
Citation
K. Ishizawa et al., Characterization of YBa2Cu3O7-delta films with different Cu contents grownby metal organic chemical vapor deposition, J CERAM S J, 108(7), 2000, pp. 623-626
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
ISSN journal
09145400 → ACNP
Volume
108
Issue
7
Year of publication
2000
Pages
623 - 626
Database
ISI
SICI code
0914-5400(200007)108:7<623:COYFWD>2.0.ZU;2-F
Abstract
Double-sided epitaxial YBa2Cu3O7-delta (YBCO) films with different copper ( Cu) contents were grown on (100) LaAlO3 substrates using a hot-wall type me tal organic chemical vapor deposition (MOCVD) apparatus. We investigated th e relationship between Cu composition ratio of YBCO films and superconducti ng properties. Some precipitates were observed on the surface of the film a nd gradually became large as the Cu composition ratio increased. Despite th e precipitation phenomenon, these YBCO films exhibited excellent supercondu cting properties at Cu composition ratios ranging from 2.5 to 4.0. The poss ibility of using the films for microwave application is also discussed.