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| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedad Mexicana de Física A.C.
2008
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57016053007 |
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Table of Contents:
- Two step synthesis of TlBa2Ca2Cu3Ox films on Ag substrates by spray pyrolysis of metal-acetylacetonates L. Pérez-Arrieta M. Aguilar-Frutis J.L. Rosas-Mendoza C. Falcony M. Jergel Física, Astronomía y Matemáticas thin films Superconductors spray pyrolysis A two-step synthesis process was performed to obtain TlBa2Ca2Cu3Ox (Tl-1223) superconductor films. The synthesized films were obtained under different thallium diffusion conditions in a two-zone furnace precursor films were deposited at 550° C on silver substrates using the spray pyrolysis technique from acetylacetonates (2, 4-pentanedionates) as reagents. Second, a thallium diffusion process is carried out to incorporate Tl in the films. For this task Tl2O3 pellets, as a Tl source, were used at 750°C. Different oxygen flow rates at atmospheric pressure were used in order to get the thallous oxide p (Tl2O) partial pressure in the range of 6.9 x 10-4 to 6.1 x 10-2 atm. The Tl-1223 phase was obtained in all cases, though for a low p (Tl2O), the films presented the BaCuO2 phase mixed with the Tl-1223 one. Critical temperature (T C) values for these films were in the range of 90 to 102 K. 2008 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57016053007 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.6 Vol.54