Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1819958 | Physica C: Superconductivity and its Applications | 2007 | 6 Pages |
Abstract
With the aim to develop low cost, high performance superconducting thick films, we tested a new method, starting from a mixture of Er2BaO4, BaCuO2, and CuO in the stoichiometric Er-123 ratio. Thick films were prepared by the screen printing technique, spreading the mixture paste on silver and MgO single-crystalline substrates processed then in Ar-1% O2 atmosphere. Using a double-step annealing process, we obtained good quality Er-123 thick films on silver substrates, with Tc (onset) 92Â K and transition width <1.5Â K. Formation of large flat grains was observed by scanning electron microscope. Transmission electron microscopy observations showed clean and sharp interfaces between 123 phase and silver substrate.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
M. Muralidhar, N. Sakai, T. Machi, I. Hirabayashi, S. Tanaka,