Textures and Microstructures
Volume 14–18 (1991), Pages 363-369
doi:10.1155/TSM.14-18.363

Texture in Bi-Sr-Ca-Cu-O Films Prepared by a Paint-on Method

J. A. Szpunar,1 P. Gangli,1 S. H. Qiu,2 I. Shih,2 E. Batalla,3 and E. G. Zwartz3

1Department of Metallurgical Engineering, McGill University 3450 University Street, Montreal H3A 2A7, Canada
2Department of Electrical Engineering, McGill University 3450 University Street, Montreal H3A 2A7, Canada
3Department of Physics, Royal Military College of Canada, Kingston K7L 4Z4, Canada

Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The texture and structure of polycrystalline films of Bi-Sr-Ca-Cu-O prepared by the paint-on method on alumina substrate has been investigated. A large variety of texture strength has been obtained as a result of various processing of 2:2:1:2, 1:1:1:2, 1:1:2:2 and 2:2:2:3 compounds. The X-ray diffraction analysis and measurements of conductivity have shown the presence of a low Tc phase. Imaging of the magnetic field distribution using the Faraday effect and the critical current measurements demonstrated that the critical current is very low. SEM observation of the microstructure indicate that the possible reason of low critical current density is a weak link between high Tc grains.