Chemi-physical diagnosis of BiSrCaCuO thin film preparation

Conference · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:6089918

Kobayashi, T; Fukumoto, Y; Tonouchi, M; Hidaka, H

Thin film and bulk formation of the new high T/sub c/ superconductive oxide BiSrCaCuO (BSCCO) and related crystal structures has been investigated. The first point the authors emphasize is an admirable effect of Mg addition on the superconductivity. The onset temperature of the high T/sub c/ phase was raised by a few degrees. Besides T/sub c,zero/ higher than 100 K was easy to obtain in BiSrCaMgCuO system. The as-grown BSCCO thin film formation is the second category herein. At least at present, sputter-deposited films, having a fairly smooth surface, exhibited T/sub c,zero/ up to 48 K without using the post-anneal. After the film was subjected to the furnace anneal, T/sub c,zero/ rose up to 90K though most of the resistance dropped at even higher temperatures. The structural change and chemical shift introduced during the post-anneal have been closely examined showing the sensitivity of the BSCCO crystallinity to the substrate material, annealing time and temperatures. These characteristic features seem to substantially differ from those of YBCO system.

• Research Organization: 4969400; Tosoh Corp., Yokohama, Kanagawa (JP)
• OSTI ID: 6089918
• Report Number(s): CONF-880812-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
• Country of Publication: United States
• Language: English

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