Characterization of YBa2Cu3O7-δ Films with Different Cu Contents Grown by Metal Organic Chemical Vapor Deposition

Koji ISHIZAWA; Yutaka YOSHIDA; Masato HASEGAWA; Morihiro IWATA; Katsuya YAMAGIWA; Izumi HIRABAYASHI; Yoshiaki TAKAI

doi:10.2109/jcersj.108.1259_623

Characterization of YBa₂Cu₃O_7-δ Films with Different Cu Contents Grown by Metal Organic Chemical Vapor Deposition

Koji ISHIZAWA, Yutaka YOSHIDA, Masato HASEGAWA, Morihiro IWATA, Katsuya YAMAGIWA, Izumi HIRABAYASHI, Yoshiaki TAKAI

Author information

Keywords: YBa₂Cu₃O_7-δ, Superconducting property, MOCVD, Microwave application

JOURNAL FREE ACCESS

2000 Volume 108 Issue 1259 Pages 623-626

DOI https://doi.org/10.2109/jcersj.108.1259_623

Details

Abstract

Double-sided epitaxial YBa₂Cu₃O_7-δ (YBCO) films with different copper (Cu) contents were grown on (100) LaAlO₃ substrates using a hot-wall type metal organic chemical vapor deposition (MOCVD) apparatus. We investigated the relationship between Cu composition ratio of YBCO films and superconducting properties. Some precipitates were observed on the surface of the film and gradually became large as the Cu composition ratio increased. Despite the precipitation phenomenon, these YBCO films exhibited excellent superconducting properties at Cu composition ratios ranging from 2.5 to 4.0. The possibility of using the films for microwave application is also discussed.

Corresponding author

Register with J-STAGE for free!