Study on low temperature processing for rare-earth-free high Tc superconducting thin films
✍ Scribed by K. Setsune; Y. Ichikawa; T. Kamada; K. Hirochi; H. Adachi; S. Kohiki; K. Wasa
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 650 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
Thin flms of rare-earth-free high T~ superconductors such as Bi-Sr-Ca-Cu-O and TI-Ba-Ca-Cu-O systems have been prepared by RF-magnetron sputtering and subsequent annealing. These thin films showed a polycrystalline structure and had highly orientated c-axes perpendicular to the substrates. These thin films exhibited superconducting transitions above 100 K and critical current densities of more than 105 A cm -2 at 77 K, which was the same order of magnitude as the polycrystalline Ln-Ba-Cu-O thin films. This paper reports details of this fabrication process using XPS data, and discusses the possibility of low temperature preparation for rare-earth-free high Tc superconductors.