A novel Ba-Cu-O compound synthesized by pulsed laser deposition

被引:4
作者
Tsukamoto, A
Nakanishi, K
Yamamoto, K
Yamauchi, H
机构
[1] Super. Conduct. Research Laboratory, Intl. Super. Conduct. Technol. Ctr., Tokyo 135, 1-10-13 Shinonome, Koto-ku
[2] Metal Research Center, Furukawa Electric Co., Ltd., Nikko 321-14
[3] Center for Ceramics Research, Res. Lab. of Engineering Materials, Tokyo Institute of Technology, Yokohama 226, Nagatsuta, Midoriku
关键词
high energy electron diffraction; laser ablation; oxidation; superconductivity;
D O I
10.1016/0040-6090(95)07099-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have discovered a new oxide phase which may be written as Ba3Cu3Ox IBCO). The sample was a thin film epitaxially grown on SrTiO3 (100) substrate. The BCO film was prepared using a pulsed ArF excimer laser ablation technique. X-ray analysis has revealed that the structure of the new phase, BCO, is tetragonal with the lattice parameters. a = 0.39 nm and c = 1.29 nm, with the unit cell consisting of a stack of three perovskite-type layers. During the film growth, the reflection high-energy electron diffraction (RHEED) pattern remained streaky and exhibited intensity oscillation as the film thickness increased. The RHEED oscillation periodicity was found to correspond to a single unit-cell-thick layer of BCO (1.29 nm). The BCO films do not show superconductivity but semiconductive behaviors.
引用
收藏
页码:138 / 142
页数:5
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